本规范规定了评估超声波焊接钢丝与终端冶金结合的试验方法和性能标准。所使用的示例特定于线性焊接类型的工艺设备。USCAR-38不适用于“拼接焊接”。本规范适用于具有图1所示典型焊缝的焊盘上焊丝配置。本试验规范将受试零件置于环境暴露中，以模拟道路车辆的现场暴露寿命。本规范中要求的暴露包括热冲击、温湿度循环和机械滥用。本试验规范旨在评估电线与电气端子之间接口的强度和性能。终端性能验证是一项单独的任务，可以通过SAE/USCAR-2等组件验证测试来完成，该测试评估整个连接系统是否可接受。

This specification defines test methods and performance criteria for evaluating ultrasonically welded wire-to-terminal metallurgical bonds. The examples used are specific to the linear weld type of process equipment. USCAR-38 is not applicable for “Splice Welding”. The specification is applicable to wire-on-pad configurations with a typical weld shown in Figure 1. This test specification subjects parts under test to environmental exposures to simulate a lifetime of field exposure for a road vehicle. Exposures called-out in this specification include Thermal Shock, Temperature Humidity Cycling and mechanical abuse. This test specification is intended to evaluate the strength and performance of the interface between wires to an electrical terminal. Validation of the performance of the Terminal is a separate task and can be accomplished using a component validation test such as SAE/USCAR-2, which evaluates whether the entire connection system is acceptable.