Views:16 Author:Site Editor Publish Time: 2018-10-23 Origin:Site
Paper And Poard Test
Paper industry, cardboard, printing industry on the original paper performance indicators more and more.All the test projects we can provide are based on GB, HG, ASTM, ISO, JIS, TAPPI and other standards to analyze the performance indicators of the raw paper and provide sufficient guarantee for your production.The quality of paper used in life and work has a lot to do with the quality of our lives and work.We provide effective test data to your technical supervision department, and make more effective guarantee for the majority of users to choose more suitable suppliers.
This test is usually mainly used to simulate the free fall of the transport package during the transport, and to investigate the packaging's ability to resist accidental impact.Usually drop height mostly according to the packing weight and may drop probability as reference standard, the drop surface should be smooth and of concrete or steel rigid surface hard (if you have special requirements to the product specification or test specification to determine customer), even if the product under the same weight for different international specification but drop height is not the same.
Reference test criteria: GB/T 4857.5, ISO 2248, ASTM D5276, GB/T 4857.11, ISTA, IEC60068, GB2423.8, gb-t4857.5, etc.
Product in its life cycle in both cases will be subjected to impact, because one is in the process of transportation vehicle collision and beating or walking on the mountain slope road because of the personnel handling the drop impact resulting from the ground, for handheld products (such as mobile phone) in not protected by cushion the fall of the impact is far more damaging to the product.In the design stage, mechanical impact test can be used to quickly verify the strength level of the structure, or determine whether the packaging material has proper buffering effect.The severity of the test depends on the waveform, G value, pulse time, and number of shocks.
In our daily life, the most commonly encountered shock waves are semi sine wave, square wave and sawtooth wave. The test is based on unpackaged products, which generally adopts three axles and six sides, with three times of impact on each side as the main specification.
Reference test standards: GB/T 2423.5, IEC 60068-2-27, mi-std-202g, EIA-364-27, etc.
This test simulates the impact of various vibration environments on the products in the transportation, installation and use environment to determine whether the products can withstand the vibration of various environments.
The most commonly used vibration modes can be divided into sinusoidal vibration and random vibration.Sine vibration test method is often used in laboratory, to simulate rotation, pulsating, volatility (in ships, aircraft, vehicles, space vehicle) on the vibration and the analysis of the product structure resonance frequency and resonance point resides validation is given priority to, it is divided into frequency sweep vibration and fixed frequency vibration, its tougher depends on the frequency range, amplitude value and test duration.Random vibration is used to simulate the shock strength assessment of the whole structure of the product and the transport environment in the packaging state. The severity depends on the frequency range, GRMS, test duration and axial direction.
Reference test standards: ASTM, ISTA, MIL, EN, IEC, ETSI, JIS, SAE, JASO, IEC, ISO, AEC, etc.