To enhance the lifetime of domestic refrigerator compressors subjected to repeated pressure loads, parametric accelerated life testing (ALT) as a reliability methodology is studied. It contains (1) ALT plan used on BX lifetime, (2) load analysis for the ALT, (3) parametric ALTs with action plans, and (4) assessment of the last compressor designs to make sure the targeted BX lifetime is achieved. To combine the design concepts of a compressor with parametric ALT, we have derived the approximated sample size equation, the life-stress model with an effort concept and acceleration factor. As a test case, a compressor with a newly designed crankshaft subjected to repetitive pressure loading was studied. Based on a mass and energy balance, the compressor loads were analyzed. In the 1st ALT, the failure mode was locking of the compressor due to crankshaft wear. The design fault of the crankshaft was the improper lubrication in the crankshaft. As a corrective action plan, the crankshafts were redesigned by: (1) changing the starting RPM from 1650 to 2050, (2) relocating the lubrication holes and adding a new groove, and (3) modifying the material of crankshaft from FCD450 to FCD500. In the 2nd ALT, wear on the surface of compressor crankshaft occurred. The minimum clearance between thrust washer and the crankshaft was then modified. After three parametric ALTs, the lifetime of the newly designed compressor was guaranteed to have B1 life 10 years.

为了提高承受重复压力负载的家用冰箱压缩机的使用寿命，研究了作为可靠性方法的参数加速寿命测试 (ALT)。它包含 (1) 用于 BX 寿命的 ALT 计划，(2) ALT 的负载分析，(3) 带有行动计划的参数 ALT，以及 (4) 对最后一个压缩机设计的评估，以确保实现目标 BX 寿命。为了将压缩机的设计概念与参数化 ALT 相结合，我们推导出了近似的样本大小方程、带有努力概念和加速因子的寿命-应力模型。作为测试案例，研究了带有新设计的曲轴的压缩机承受重复压力载荷。基于质量和能量平衡，分析了压缩机负载。在第一个 ALT 中，故障模式是由于曲轴磨损导致压缩机锁定。曲轴的设计缺陷是曲轴润滑不当。作为纠正行动计划，曲轴进行了重新设计：(1) 将起始转速从 1650 更改为 2050，(2) 重新定位润滑孔并增加新的凹槽，以及 (3) 将曲轴材料从 FCD450 修改为 FCD500 . 在第 2 次 ALT 中，压缩机曲轴表面出现磨损。然后修改了止推垫圈和曲轴之间的最小间隙。经过三个参数的 ALT，新设计的压缩机寿命保证 B1 寿命为 10 年。(1) 将起始转速由 1650 改为 2050， (2) 重新定位润滑孔并增加新槽，以及 (3) 将曲轴材料从 FCD450 修改为 FCD500。在第 2 次 ALT 中，压缩机曲轴表面出现磨损。然后修改了止推垫圈和曲轴之间的最小间隙。经过三个参数的 ALT，新设计的压缩机寿命保证 B1 寿命为 10 年。(1) 将起始转速由 1650 改为 2050， (2) 重新定位润滑孔并增加新槽，以及 (3) 将曲轴材料从 FCD450 修改为 FCD500。在第 2 次 ALT 中，压缩机曲轴表面出现磨损。然后修改了止推垫圈和曲轴之间的最小间隙。经过三个参数的 ALT，新设计的压缩机寿命保证 B1 寿命为 10 年。