消费类电子产品测试

Protection against damages caused by the impact forces loaded through dropping is an important concern for the design of wearable or portable consumer electronic products. The damage may include cracking of the screen, break in the device or severe functional damage.

The purpose of drop testing is to validate the design goals and workmanship based on possible operational scenarios to verify durability. It addresses the handling survivability of products and encompasses various testing scenarios including transportation (shipment via train, plane, ship, car). 

Drop testing also validates analytical models which are also used during the development of consumer electronics. Analytical models allow to cost-effectively evaluate designs without testing prior to prototyping which saves costs and supports faster 3C product time to market and satisfying price point requirements. 

Packaging testing assesses how a package and its contents react to impacts during shipping and handling. The test helps manufacturers address design flaws, improve durability, minimize product damage, loss, and associated costs, avoid over-packaging, which is more expensive for businesses, avoid under-packaging, which endangers goods resulting in higher costs due to the destruction of products during transportation. The test can also help determine the survivability of a product's packaging and indicates structural and mechanical weaknesses not necessarily detected in shock and vibration tests.

环境应力筛选（ESS）是指对产品施加应力直至其失效。作为ESS测试方法的一部分，高度加速寿命试验（HALT）与高度加速应力筛选（HASS）的结合，通过早期发现此类失效机制来提高产品可靠性，从而有助于降低维修或更换成本。ESS是应对消费类电子设备在实际使用中可能发生失效的有效手段。

ESS测量链采用控制加速度计、响应加速度计、数据采集系统、信号调理装置、气候试验箱、振动台和控制器。测试过程通常持续3至5天，包含多个阶段，在此期间被测单元（UUT）将暴露于以下条件：

• 周期性振动、随机振动和冲击
• 恒温停留与温度循环
• 热应力和振动应力的组合