The electrification of the automotive industry has been one of the most significant technological shifts in recent years. Electric vehicles (EVs) are becoming increasingly popular due to their eco-friendliness, energy efficiency, and lower operational costs. However, one of the critical aspects that has been a focus of both manufacturers and regulators is battery safety performance. Ensuring the safety of electric vehicle batteries is paramount for the widespread adoption and acceptance of EVs. To achieve this, various testing equipment and methodologies have been developed to assess the safety of EV batteries. In this article, we will explore the commonly used testing equipment for electric vehicle battery safety performance.

1. Battery Testing Chambers

Battery testing chambers are designed to simulate extreme environmental conditions, such as high temperatures, low temperatures, and humidity, that an electric vehicle battery might encounter during its lifetime. These chambers help researchers and engineers assess how a battery performs under stress. By exposing batteries to these conditions, manufacturers can identify potential issues and develop strategies to mitigate them. Battery testing chambers play a vital role in ensuring that EVs are safe to operate in a wide range of climates and weather conditions.

We GAAT manufacture a wide range of explosion-proof environmental chambers, catering to the testing needs of temperature cycle, humidity, and thermal shock. In order to make most of the lab space of customer site, we have developed 3-zone and 4-zone independently controlled climatic chambers which allow customers to test different battery pieces under different environment conditions. Our unique energy-saving technology used in our system design can also enable our customers to be more eco-friendly and save on testing costs.

2. Thermal Imaging Cameras

Thermal imaging cameras are invaluable tools for assessing the thermal behavior of EV batteries. These cameras allow researchers to visualize and analyze temperature distribution within the battery pack. Overheating can lead to thermal runaway, which is a severe safety hazard. By monitoring and identifying hotspots within the battery, thermal imaging cameras help engineers design better cooling systems and thermal management strategies to prevent overheating and ensure the safety of the battery.

3. Battery Management Systems (BMS)

A Battery Management System (BMS) is an essential component of electric vehicle battery safety. While not a testing equipment per se, it plays a crucial role in monitoring and managing the state of charge, state of health, and temperature of individual battery cells within the pack. A well-designed BMS can detect abnormalities and trigger protective measures to prevent dangerous situations, such as overcharging, over-discharging, or thermal runaway. BMS technology continues to evolve, becoming more sophisticated and efficient in enhancing battery safety.

4. Impact Testing Machines

Safety in electric vehicles extends beyond normal operating conditions. Impact testing machines are used to simulate collisions and assess how well the battery pack can withstand external forces. This testing is essential to ensure that EV batteries do not pose a risk of fire or explosion in the event of an accident. Manufacturers use impact testing to design robust battery enclosures and develop materials that can absorb and dissipate impact energy safely.

We make battery nail penetration and crushing test chamber, battery drop tester, twisting force tester, together with integrated battery performance data acquisition system to our customers.

5. Battery Cycle Testers

Battery cycle testers are used to simulate the charging and discharging cycles that an electric vehicle battery undergoes throughout its life. These testers help evaluate how the battery’s capacity and performance degrade over time. By understanding a battery’s behavior under various usage scenarios, manufacturers can design batteries that have a longer lifespan and maintain safety and performance over time.

We make over-charging and discharging tester, thermal abuse and short circuit testers together with integrated battery performance data acquisition system to our customers.

6. Electrochemical Analyzers

Electrochemical analyzers are sophisticated devices used to study the electrochemical characteristics of battery materials and cells. Researchers use them to assess the performance of different battery chemistries and investigate potential safety risks. By gaining a deep understanding of the electrochemical processes within batteries, scientists can make informed decisions about materials and designs that enhance safety and performance.

Conclusion

Ensuring the safety performance of electric vehicle batteries is paramount for the continued growth and acceptance of electric vehicles. The commonly used testing equipment outlined in this article helps manufacturers and researchers assess and enhance battery safety in various ways, from simulating extreme conditions to monitoring thermal behavior, impact resistance, and electrochemical characteristics.

As the electric vehicle industry continues to evolve, so too will the testing equipment and methodologies. Ongoing research and development in battery safety testing are crucial to keeping pace with the rapid advancements in EV technology and ensuring the safety of these eco-friendly vehicles on our roads. With these testing tools at their disposal, manufacturers can innovate with confidence, knowing that safety remains a top priority in the world of electric mobility.

The post Enhancing Electric Vehicle Safety: A Closer Look at Commonly Used Battery Testing Equipment first appeared on Expert of Environmental Simulation and Reliability Test Equipment.

Introduction

Vibration testing is a crucial aspect of product development and quality assurance in various industries. Two commonly used instruments for vibration testing are mechanical vibration testers and electro-dynamic vibration testers. While both serve the purpose of simulating real-life vibration scenarios, they differ in their operating mechanisms, applications, and advantages. In this article, we will explore the key differences between mechanical vibration testers and electro-dynamic vibration testers to help you understand their unique features and make an informed decision for your testing needs.

The Difference Between Mechanical Vibration Tester and Electro-Dynamic Vibration Tester

Mechanical Vibration Tester

A mechanical vibration tester, also known as a shaker table, utilizes mechanical mechanisms to generate vibrations. It typically consists of a sturdy platform or table that moves in specific patterns and amplitudes. The motion of the table can be controlled manually or through mechanical linkages, providing precise control over vibration parameters such as frequency, amplitude, and waveform.

Applications of Mechanical Vibration Testers

Product Reliability Testing: Mechanical vibration testers are extensively used to evaluate the durability and reliability of various products, including electronic components, automotive parts, and consumer goods. By subjecting the products to controlled vibrations, manufacturers can assess their ability to withstand real-world conditions.

Structural Analysis: Engineers employ mechanical vibration testers to analyze the structural integrity of buildings, bridges, and other infrastructure. By subjecting these structures to controlled vibrations, they can identify potential weaknesses, resonance frequencies, and modal characteristics.

Packaging Testing: Mechanical vibration testers are crucial in the packaging industry to simulate the vibrations products experience during transportation and handling. This helps manufacturers design and optimize packaging materials and methods to ensure the protection and safety of goods.

Electro-Dynamic Vibration Tester

An electro-dynamic vibration tester, often referred to as an electro-dynamic shaker, operates based on electromagnetic principles. It utilizes an electromagnetic coil and a permanent magnet assembly to generate vibrations. When an electrical current passes through the coil, it interacts with the magnetic field, resulting in a force that moves the shaker head and imparts controlled vibrations to the test specimen.

Applications of Electro-Dynamic Vibration Testers

Aerospace Testing: Electro-dynamic vibration testers are extensively used in the aerospace industry to simulate the vibrations experienced by aircraft, spacecraft, and their components during operation. This ensures that the structures and systems can withstand the harsh conditions of flight and maintain their functionality and reliability.

Automotive Testing: In the automotive industry, electro-dynamic vibration testers play a crucial role in evaluating the performance and durability of automotive parts. From engines and suspension systems to body structures, these testers simulate the vibrations experienced by vehicles on different road surfaces and under various driving conditions.

Electronics Testing: With the increasing miniaturization of electronic devices, it is essential to evaluate their response to vibrations. Electro-dynamic vibration testers enable manufacturers to assess the effects of vibration on electronic components, such as printed circuit boards (PCBs), ensuring their reliability and functionality.

FAQs (Frequently Asked Questions)

Q1: Which type of vibration tester is more versatile, mechanical or electro-dynamic?

Both mechanical vibration testers and electro-dynamic vibration testers offer versatility, but their applications may vary. Mechanical vibration testers are suitable for a wide range of industries, including electronics, automotive, and packaging. On the other hand, electro-dynamic vibration testers excel in aerospace, automotive, and electronics testing. The choice between the two depends on the specific requirements of the testing application.

Q2: What are the advantages of using a mechanical vibration tester?

Mechanical Vibration Testers offer several advantages:

Cost-Effectiveness: Mechanical vibration testers are generally more affordable compared to electro-dynamic vibration testers. This makes them a preferred choice for organizations with budget constraints.

Durability: Mechanical vibration testers are known for their robustness and ability to withstand heavy loads and harsh testing conditions. The mechanical components used in these testers are designed to endure rigorous vibrations without compromising performance.

Flexibility: Mechanical vibration testers provide a high degree of flexibility in terms of adjusting vibration parameters. The control mechanisms, such as manual adjustments and mechanical linkages, allow precise control over frequency, amplitude, and waveform. This versatility enables users to simulate a wide range of vibration scenarios.

Ease of Maintenance: Mechanical vibration testers have relatively simple designs, consisting of mechanical components that are easy to maintain and repair. They do not rely on complex electrical systems or sophisticated control algorithms, making maintenance tasks less time-consuming and costly.

On the other hand, Electro-Dynamic Vibration Testers offer distinct advantages:

Precise and Controlled Vibration: Electro-dynamic vibration testers provide precise control over vibration parameters. The electromagnetic coil and permanent magnet assembly generate controlled vibrations with high accuracy, allowing for precise replication of real-world vibration conditions.

Wide Frequency Range: Electro-dynamic vibration testers can produce vibrations across a broad frequency range, from very low frequencies to high frequencies. This enables comprehensive testing and evaluation of products that experience vibrations across different frequency spectrums.

High Acceleration Levels: Electro-dynamic vibration testers are capable of generating high acceleration levels, making them suitable for testing applications that require intense vibrations. This is particularly important in industries such as aerospace and automotive, where products need to withstand extreme vibration conditions.

Advanced Control and Monitoring: Electro-dynamic vibration testers often come equipped with advanced control and monitoring systems. These systems allow users to precisely adjust vibration parameters and monitor the response of the test specimen in real-time. The availability of data logging and analysis features further enhances the testing process.

In summary, while mechanical vibration testers are cost-effective, durable, and offer flexibility, electro-dynamic vibration testers provide precise control, a wide frequency range, high acceleration levels, and advanced control and monitoring capabilities.

Conclusion

Mechanical vibration testers and electro-dynamic vibration testers serve as valuable tools for conducting vibration testing in various industries. Understanding their differences, advantages, and applications is crucial for professionals involved in product development, quality assurance, and structural analysis. The choice between the two types of testers depends on specific testing requirements, budget considerations, and the desired level of control and precision.

By selecting the most suitable vibration tester, organizations can ensure the reliability, durability, and performance of their products, leading to enhanced customer satisfaction and reduced risks associated with vibration-related failures.

The post The Difference Between Mechanical Vibration Tester and Electro-Dynamic Vibration Tester first appeared on Expert of Environmental Simulation and Reliability Test Equipment.

Time: May 16, 2023 – May 18, 2023
Address: Shenzhen International Exhibition Center (Bao’an District)
Booth No.: 14D096

SEMI-e Exhibition Showcases the semiconductor industry chain based on chip design and manufacturing, integrated circuits, packaging and testing, materials and equipment, new 5G applications, and new displays. It has become one of the most influential semiconductor industry events with largest audience group in South China, the most complete semiconductor industry chain display, and diverse professional activities.

This is our second industrial exhibition we attended this year (after CITE2023). We exhibited SEMI-e jointly with our parent company Zhongzhi, aiming to provide a comprehensive range of testing equipment for semiconductor customers, including BI, TH, TCT, TC, TST & HAST chambers.

On this exhibition, we have showcased our new generation HAST (highly accelerated stress test) Chamber in particularly. We are one of the very few Chinese manufacturers who is able to manufacture equally-good quality HAST chamber by ourselves, and the equipment has been certified by CEPREI – China’s most authoratative lab for testing and certification in electronics and semicon industry. Our Hast chamber adopts a double-container system design, in which the test chamber and the steam generator chamber are independent from each other. Compared to a single-container structural design (ESPEC style), our machine can provide a more stable and accurate testing environment, allow wider humidity range and prevent the dewing problem.

Our standard HAST chamber model comes with inner volume φ420*500mm (Diameter*Depth), with minimal 20 bias terminals pre-set on the chamber door side. Up to 300 bias terminals can be installed as option as per customer requirements. In parallel, we offer wider range of temperature and humidity settings for our customers to fulfill their various testing requirements.

Apart from that, as shown in our exhibition posters and website, we also provide a full range of testing equipment for semicon sector including vacuum oven (null oxygen), burn in oven, climatic chamber, clean oven, CCT, thermal shock chamber etc. Please feel free to reach out if you have any inquiries!

The post GAAT – together with our parent company Zhongzhi, exhibited on SEMI-e 2023！ first appeared on Expert of Environmental Simulation and Reliability Test Equipment.

In this article, we’ll provide you with a comprehensive overview of the key differences between linear and nonlinear temperature chambers, including their operation, applications, advantages, and disadvantages. By the end of this article, you’ll have a clear understanding of the differences between these two types of temperature chambers and which one is the right choice for your application.

Linear Temperature Chambers

A linear temperature chamber is a type of temperature chamber that operates on a linear heating and cooling system. This means that the temperature inside the chamber is gradually increased or decreased at a constant rate over a set period of time. Linear temperature chambers are commonly used in applications where a gradual change in temperature is required, such as in the testing of electronic components, materials, and products.

How Linear Temperature Chambers Work

Linear temperature chambers work by using a heating and cooling system that is designed to maintain a constant rate of change in temperature. This is achieved by using a temperature control system that regulates the amount of heat and cold air that is introduced into the chamber. The rate of change in temperature is determined by the temperature control system and can be adjusted to meet the specific needs of the application.

Applications of Linear Temperature Chambers

Linear temperature chambers are commonly used in applications that require a gradual change in temperature over a set period of time. These applications include:

– Electronic component testing

– Material testing

– Product testing

– Environmental testing

Advantages of Linear Temperature Chambers

Linear temperature chambers offer several advantages, including:

– Accurate temperature control

– Precise rate of change in temperature

– Suitable for long-term testing

– Can be used for a wide range of applications

Disadvantages of Linear Temperature Chambers

Linear temperature chambers also have some disadvantages, including:

– Limited temperature range

– Limited ramp rate

– Limited cooling rate

– Limited heating rate

Nonlinear Temperature Chambers

A nonlinear temperature chamber is a type of temperature chamber that operates on a nonlinear heating and cooling system. This means that the temperature inside the chamber can be changed at varying rates over a set period of time. Nonlinear temperature chambers are commonly used in applications where a rapid change in temperature is required, such as in the testing of electronic components, materials, and products.

How Nonlinear Temperature Chambers Work

Nonlinear temperature chambers work by using a heating and cooling system that is designed to maintain a variable rate of change in temperature. This is achieved by using a temperature control system that regulates the amount of heat and cold air that is introduced into the chamber. The rate of change in temperature is determined by the temperature control system and can be adjusted to meet the specific needs of the application.

Applications of Nonlinear Temperature Chambers

Nonlinear temperature chambers are commonly used in applications that require a rapid change in temperature over a set period of time. These applications include:

– Electronic component testing

– Material testing

– Product testing

– Environmental testing

Advantages of Nonlinear Temperature Chambers

Nonlinear temperature chambers offer several advantages, including:

– High-speed temperature change

– Wide temperature range

– High cooling rate

– High heating rate

Disadvantages of Nonlinear Temperature Chambers

Nonlinear temperature chambers also have some disadvantages, including:

– More difficult to control temperature accurately

– May cause thermal shock to the test object

– Unsuitable for long-term testing

– Limited applications

Conclusion

In conclusion, the key differences between linear and nonlinear temperature chambers are their heating and coolingpatterns, applications, advantages, and disadvantages. Linear temperature chambers operate on a linear heating and cooling system, providing a gradual change in temperature suitable for long-term testing and a wide range of applications. Nonlinear temperature chambers, on the other hand, operate on a nonlinear heating and cooling system, providing a rapid change in temperature suitable for high-speed testing, but with limited applications.

When choosing between a linear and nonlinear temperature chamber, it is essential to consider the specific needs of your application. If you require a gradual change in temperature for long-term testing or a wide range of applications, a linear temperature chamber may be the best choice. If you require a rapid change in temperature for high-speed testing, a nonlinear temperature chamber may be the better option.

At our company, we offer a wide range of temperature chambers, including both linear and nonlinear options, to meet the unique needs of our customers. Our experienced team can help you choose the right temperature chamber for your application, ensuring accurate and reliable results.

We hope this article has provided you with a comprehensive understanding of the differences between linear and nonlinear temperature chambers. If you have any further questions or would like to learn more about our temperature chambers, please don’t hesitate to contact us.

The post Linear and Nonlinear Temperature Chambers: Understanding the Key Differences first appeared on Expert of Environmental Simulation and Reliability Test Equipment.

Time: Apr 7, 2023 – Apr 9, 2023
Address: Shenzhen Convention & Exhibition Center (Futian District)
Booth No.: 3B12

With the theme of “Innovation Leading and Collaborative Development”, this year’s China Electronic Information Expo has set up five pavilions including CITE Brand Innovation Theme Pavilion, New Display and Application Pavilion, New Generation Information Industry Intelligent Manufacturing Pavilion, Smart Car Technology Pavilion, and Basic Electronics Pavilion. More than 1,200 companies participated in the exhibition with more than 5,000 technologically innovative products, and the audience reached 80,000.

In terms of concurrent forums, this expo brought together more than 1,500 speakers, experts and scholars to discuss topics such as industrial digitalization, 5G industry, Internet of vehicles, technology innovation, electronic components, big data storage, investment, financing, and procurement. More than 40 themed conferences and professional activities have brought idea sharing in the field of electronic information.

It is the 2^nd time that GAAT has participated in CITE since the covid pandemic breakout in China. With regards to electronic information sector, we have showcased our new generation HAST (highly accelerated stress test) Chamber on site, which got positive market responses from visitors. Quality-wise, it provides equally-good testing capabilities as Hirayama HAST chamber, and has been certified by CEPREI – China’s most authoratative lab for testing and certification in electronics industry. Meanwhile, we can offer a very competitive pricing and short lead time for our standard models HAST chamber.  

Apart from that, as shown in our exhibition posters and website, we also provide a full range of testing equipment for IT sector including vacuum oven (null oxygen), burn in oven, climatic chamber, clean oven, CCT and thermal shock chamber. Please feel free to reach out if you have any inquiries!

The post GAAT – Dongguan Saizhun Technology Equipment Co. exhibited on CITE2023 first appeared on Expert of Environmental Simulation and Reliability Test Equipment.

Thermal cycle testing involves subjecting a sample to a series of repeated heating and cooling cycles. The sample is typically placed in a temperature chamber, which can be programmed to control the temperature range, heating and cooling rates, and the number of cycles. During the test, the sample’s performance is monitored to observe changes in its properties over time. The goal of this testing method is to evaluate the durability of a material or product under extreme temperature conditions, such as those encountered during use or transportation.

On the other hand, thermal shock testing involves subjecting a sample to a rapid and extreme temperature change. Unlike thermal cycle testing, which involves gradual changes in temperature, thermal shock testing involves exposing the sample to a sudden temperature change, usually from one extreme to another. This rapid change creates thermal stress within the sample, which can cause cracking, warping, or other forms of physical damage. The goal of this testing method is to evaluate a sample’s ability to withstand sudden and extreme temperature changes without suffering damage.

One of the key differences between these two testing methods is the nature of the temperature exposure. Thermal cycle testing simulates the gradual changes in temperature that a product might experience during its lifespan. In contrast, thermal shock testing exposes a product to sudden, extreme temperature changes that are unlikely to occur in everyday use. As a result, thermal cycle testing is better suited for evaluating a product’s long-term durability and performance, while thermal shock testing is better suited for identifying potential weaknesses or vulnerabilities that may lead to catastrophic failure under extreme conditions.

Another difference between these testing methods is the type of equipment used. Thermal cycle testing typically uses a temperature chamber, which can be programmed to control the temperature range and cycling rates. In contrast, thermal shock testing uses specialized equipment (eg. thermal shock test chamber) that can rapidly and precisely change the sample’s temperature. This equipment can be expensive, and the testing process can be more challenging to set up and execute.

In summary, thermal cycle testing and thermal shock testing are two thermal testing methods that are commonly used to evaluate a product’s performance under extreme temperature conditions. GAAT offers both temperature cycle chambers (-80℃～+180℃，normal temperature change rate eg 1～3℃/min and rapid change rate options up to 20℃/min) and thermal shock test chambers (temperature chocking range -65℃ to +200℃, temp change time within 10 seconds). Feel free to visit our product pages of such chambers respectively for more specification details!

The post Differences between Thermal Cycle Test and Thermal Shock Test first appeared on Expert of Environmental Simulation and Reliability Test Equipment.

The cyclic corrosion test (CCT) is a widely used laboratory test method for assessing the corrosion resistance of metallic materials and coatings under realistic, yet accelerated, environmental conditions. The test involves exposing the test specimens to a series of cyclic changes in temperature, humidity, and salt spray (or other corrosive agents) to simulate the effects of outdoor atmospheric corrosion.

During the test, the specimens are typically mounted in a test cabinet or chamber that can control and cycle the temperature, humidity, and salt spray conditions according to a pre-determined test procedure. The test duration and cycling parameters can vary depending on the test standard or the specific requirements of the test application.

The CCT method is widely used in various industries, including automotive, aerospace, marine, and construction, to evaluate the corrosion resistance of materials and coatings and to compare the performance of different materials and coatings under accelerated corrosion conditions. The test results can help identify potential corrosion problems and guide the selection of materials and coatings for specific applications.

Key technical challenges of cyclic corrosion test

While the cyclic corrosion test (CCT) is a widely accepted laboratory method for evaluating the corrosion resistance of materials and coatings, there are several technical challenges that need to be addressed to ensure accurate and reliable test results. Some of the key technical challenges of the CCT include:

Reproducibility: The CCT method involves several parameters such as the cycle time, temperature, humidity, salt concentration, and exposure time, which can affect the test results. Therefore, it is essential to ensure that the test conditions are precisely controlled and reproducible.

Sample preparation: Proper sample preparation is crucial to obtain reliable test results. The surface condition of the samples, such as surface finish, roughness, and cleanliness, can affect the corrosion behavior. It is important to follow the appropriate sample preparation methods specified in the test standard to ensure accurate and reproducible results.

Test variability: The variability of the test results can be influenced by several factors such as the test chamber design, salt spray nozzle configuration, and the positioning of the samples in the test chamber. Therefore, it is essential to follow the test procedures carefully and perform the test under consistent conditions.

Test duration: The duration of the test can vary depending on the test standard and the specific application requirements. The duration of the test must be carefully selected to simulate the intended service life of the product. A longer test duration can provide more accurate and reliable results but can also increase the cost and time required for the test.

Addressing these technical challenges requires careful attention to the details of the test method, careful selection of test parameters, and proper execution of the test procedures.

Designing and constructing a good cyclic corrosion test (CCT) chamber can be a complex process, and there are several technical difficulties that need to be addressed to ensure accurate and reliable test results.

GAAT has a 17-year history of making CCT chamber and we are one of the few manufacturers in China who can make complex CCT chamber full range temperature and humidity control at walk-in size! Out CCT chamber has precise control of test parameters, adopts corrosion-resistant titanium materials, provides a homogeneous test environment for all test samples, and is easy for maintenance and cleaning. Feel free to contact our sales team for more details!

CCT Chamber (work in progress)

The post Key technical challenges of cyclic corrosion test first appeared on Expert of Environmental Simulation and Reliability Test Equipment.

Temperature cycle testing is an important step in the product development process, and the temperature cycle chamber is an essential tool for conducting these tests. The chamber can be programmed to mimic temperature changes (including extreme hot or ultra cold conditions) that a product may experience over time. By exposing the product to these conditions, manufacturers can determine its ability to withstand extreme temperature levels and other environmental factors that can affect performance.

The temperature cycle chamber is especially useful for industries such as aerospace, automotive, electronics, and medical device manufacturing. These industries require products that can withstand harsh and extreme conditions and continue to function properly. For example, in the aerospace industry, a temperature cycle chamber is used to test the reliability of aircraft components, such as engines and avionics systems, in extreme temperature conditions.

One of the key benefits of the temperature cycle chamber is that it can simulate conditions that are difficult or impossible to replicate in real-life testing. For example, it is difficult to recreate the temperature fluctuations that occur in space or during high-altitude flights, but the temperature cycle chamber can simulate these conditions with accuracy and repeatability.

GAAT offers a variety of temperature cycle chambers with different sizes (from benchtop to giant walk in/drive in sizes) and different temperature ranges (-80℃～+180℃). Standard models provide an average heating rate at 3.5℃/min and a cooling rate at 1℃/min, while customized models can achieve linear heating and cooling rate up to 20℃/min. Furthermore, we offer a number of bespoke options such as portholes design, hand gloves entry port design, explosion-proof chains for specialty DUT, etc. If you are interested in a climatic chamber that has not only temperature control but also humidity and low pressure conditions control, please also feel free to contact us for the appropriate models!

The post Temperature Cycle Chamber: an Essential Tool for Reliable Testing and Quality Assurance first appeared on Expert of Environmental Simulation and Reliability Test Equipment.

Environmental simulation testing equipment is used to recreate environmental conditions that a product may encounter during its intended use. This helps manufacturers determine the product’s durability, reliability, and performance in real-world conditions. There are several types of environmental simulation testing equipment available, each designed to recreate specific environmental conditions.

Temperature and Climate Chambers: These are designed to recreate temperature and humidity conditions. They can range from small benchtop units to large walk-in chambers that can accommodate full-sized products. These chambers can be programmed to simulate a range of temperatures and humidity levels, from sub-zero conditions to extreme heat.

Vibration and Shock Testing chambers: This type of equipment is used to recreate the shock and vibration that a product may encounter during transportation or operation. Vibration testing is used to evaluate a product’s ability to withstand the effects of vibration, while shock testing simulates the impact of a sudden shock.

Altitude Chambers: These chambers are used to recreate high-altitude conditions, such as those experienced by aircraft, satellites, and other aerospace products. These chambers can be programmed to simulate a range of altitudes, from sea level to the edge of space.

Rain and Dust Testing chambers: This type of equipment simulates the effects of rain and dust on a product. Rain testing equipment can be used to recreate a range of rainfall conditions, while dust testing equipment simulates the accumulation of dust on a product.

Salt Spray Chambers: These chambers are used to simulate the corrosive effects of salt spray on metal products. They are commonly used in the automotive and marine industries to test the durability of metal components.

In conclusion, environmental simulation testing is an essential part of the product development process. It helps manufacturers determine how their products will perform in real-world conditions and make necessary improvements. With the range of environmental simulation testing equipment available, manufacturers can ensure that their products meet their intended use and provide customers with quality, reliable products.

The post Why use environmental simulation testing equipment? first appeared on Expert of Environmental Simulation and Reliability Test Equipment.

The highly accelerated temperature and humidity stress test (HAST) is a highly accelerated method of electronic component reliability testing using temperature and humidity as the environmental parameters. HAST is also known as the pressure cooker test (PCT) or unsaturated pressure cooker test (USPCT). Its purpose is to evaluate a specimen’s humidity resistance by increasing the water vapor pressure in a test chamber to an extremely high level above the partial water vapor pressure inside the test sample. This process temporally accelerates the infiltration of moisture into the sample.

Test standards

HAST is a more accelerated version of accelerated humidity resistance testing. Compared to high-temperature & high humidity testing (at 85°C & 85% RH, sometimes called as “double-85 test”), HAST causes more component contact due to moisture driven corrosion and more insulation deterioration. HAST is done mainly on plastic sealed components.

IEC60068-2-66, IEC60749-4, JESD22-A102, JESD22-A110, JESD22-A118 and JICS60068-2-66 are the major HAST-related test standards that are widely applied in the world. The test is performed at a specified temperature and relative humidity or pressure.The atmosphere normally has a temperature of at least 100°C, in a state of water vapor pressurization. HAST is sometimes classified as a combined test when pressure is also considered as an environmental parameter. There are saturated and unsaturated varieties of HAST. The former is typically done at conditions of 121°C and 100% RH and the latter at conditions of 110,120 or 130°C and 85% RH. Tests done with the electronic component’s power on are usually the unsaturated type. HAST is a fairly extreme test which makes it important to check failure modes.

HAST chamber by GAAT

Through our continuous research and innovation, we have made breakthrough and developed our new generation HAST chamber with double-container system design, in which the test chamber and the steam generator chamber are independent from each other. Compared to a single-container structural design, our machine can provide a more stable and accurate testing environment, allow wider humidity range and prevent the dewing problem.

Our standard HAST chamber model comes with inner volume φ420*500mm (Diameter*Depth), with minimal 20 bias terminals pre-set on the chamber door side (up to 300 bias terminals as option), allows testing for larger size specimen and convenient operation of specimen power connection. In parallel, we offer wider range of temperature and humidity settings for our customers to fulfill their various testing requirements.

Temperature range: 105℃～150℃
Humidity range: 65%～100%RH
The range chart of temperature, humidity and pressure below:
(note: the pressure value shown on the chart is absolute pressure)

GAAT’s HAST chamber is also calibrated and certified by CEPREI, China’s most authoritative lab for calibration and certification in electronics and semiconductor sector. CEPREI tested multiple points (including 105℃ 100%RH；110℃ 85%RH；120℃ 85%RH；121℃ 100%RH；130℃ 85%RH；140℃）and all got satisfactory results.  We offer such a high quality instrument with competitive price and short lead time. Please don’t hesitate to contact our sales team for full chamber specification sheet, quote and calibration report.

The post HAST (Highly Accelerated Stress Test) Chamber by GAAT first appeared on Expert of Environmental Simulation and Reliability Test Equipment.