2024.11.26
The difference and conversion method between engineering stress-strain and real stress-strain!
The mechanical behavior of materials under dynamic loads is significantly different from that under static conditions. Therefore, obtaining the true stress-strain curves of materials at different strain rates is a key step in simulating car collisions.
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2024.11.20
Three characterization methods for molecular weight and distribution of ultra-high molecular weight polyethylene (UHMWPE)
The various properties of UHMWPE are directly related to its molecular weight and distribution.
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2024.11.20
Key points for compressive strength (CAI) testing of composite materials after impact to ensure material safety in the aerospace and automotive industries
Due to the fact that CAI values are not only used as indicators for evaluating material properties, but also as the basis for determining design values in structural design, CAI value testing for fiber-reinforced composite materials is becoming increasingly important.
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2024.11.13
How to choose the stretching rate to ensure the accuracy of plastic stretching testing
Due to the wide variety of polymer materials, their stress-strain curves exhibit complex situations. According to the performance of the yield point, elongation rate, and fracture situation during the stretching process, it can be roughly divided into five types
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2024.11.13
The simulation analysis results of stress triaxiality assistance are more in line with engineering reality
The stress triaxiality (i.e. the ratio of average normal stress to equivalent stress) can more reasonably reflect the influence of stress state on plastic deformation and fracture failure.
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2024.11.06
Fatigue life estimation method under alternating stress
Practice has shown that the failure mode of components under alternating stress is completely different from that under static load. Under alternating stress, although the maximum stress is lower than the yield limit, it will suddenly fracture after long-term repetition.
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2024.10.31
Diagram of standardized and non standardized mechanical tests for anisotropic polymer based composite materials
With the widespread use of polymer based composite materials, their mechanical property testing has become increasingly important. One of the main challenges in testing these anisotropic materials is the need to develop various fixtures to provide various methods for testing materials under different conditions.
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2024.10.24
How can sunshine simulation tests help shorten the automotive development cycle?
The factors that affect the aging of automotive interior and exterior parts are light, temperature, and humidity. The sunlight simulation test simulates the exposure of the vehicle to sunlight, high and low temperatures, and humid and hot weather throughout its lifecycle to verify whether defects will occur during use.
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2024.10.24
Seven major differences between environmental testing and reliability testing, attached is a list of conditions for automotive electronic environmental and reliability testing!
Although environmental testing and reliability testing are closely related, they have distinct differences in terms of testing objectives, the number of environmental stresses used, criteria for selecting environmental force values, testing types, testing time, and testing termination criteria.
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2024.10.15
How to comprehensively evaluate the low VOC and low haze PBT automotive headlight decorative ring?
The streamlined and personalized design requirements of the car's exterior make the distance between the headlights and the decorative frame increasingly close. The gradual increase in the wattage of the front headlight bulbs leads to accelerated aging and deformation of materials, as well as fogging of the headlights. Therefore, the requirements for the heat-resistant and VOC content of the headlight decorative ring materials are becoming higher and higher.
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2024.10.08
Technical Sharing | Effects of Flame retardants, Weathering agents, and Titanium Dioxide on the Light Aging and Weathering Resistance of Flame Retardant ABS
This article investigates the color difference changes before and after material aging, and studies the effects of adding flame retardants, weather resistant agents, and titanium dioxide on the photo aging and weather resistance of flame retardant ABS, providing theoretical support for the application of flame retardant ABS in electronic and electrical products.
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2024.09.24
Fitting of creep constitutive equation and prediction of long-term deformation of ABS for electrical and electronic shells
By using the creep constitutive equation, it is possible to simulate the long-term deformation of materials under actual working conditions and predict the service life of structures. This is particularly important for products that serve under high temperature conditions for a long time, and is beneficial for optimizing product design and performance.
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