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运用金相显微镜、扫描电镜和能谱仪等现代分析仪器，研究了汽车离合器壳体的开裂原因。结果表明，离合器所用材料强度低、气孔多，使材料韧性降低；壳体两侧面的内表面无过渡圆角，导致应力集中；壳体在弯矩和强烈振动作用下，应力集中出现纹，导致开裂和破断．针对以上问题提出了改进措施。
The use of modern microscopes, scanning electron microscopy and energy-dispersive spectrometer and other modern analytical instruments to study the reasons for the clutch clutch housing cracking. The results show that the strength and the porosity of the material used in the clutch are low and the toughness of the material is reduced. There is no transition fillet on the inner surface of the two sides of the shell, resulting in stress concentration. The stress concentration occurs in the shell under bending moment and strong vibration, Cracked and broken. In view of the above problems put forward improvement measures.