Shot peening for fatigue life improvement of aerospace strutures
Shot peening for fatigue life improvement of aerospace strutures
批准号:
435539-2012
负责人:
Lévesque, Martin
金额:
$15.0万
依托单位国家:
加拿大
项目类别:
Collaborative Research and Development Grants
财政年份:
2014
资助国家:
加拿大
项目状态:
已结题
起止时间:
2014-01-01 至 2015-12-31
中文摘要
喷丸是一种冷加工工艺,在航空航天工业中广泛用于提高金属零件的疲劳寿命。这一过程是通过用高速的弹丸轰击金属部件的表面来完成的,这些弹丸在表面附近诱导了塑性变形层。这种塑性变形导致喷丸表面的残余压应力场,从而降低了在循环加载条件下过早失效的可能性,从而提高了喷丸部件的疲劳寿命。
英文摘要
Shot peening is a cold working process widely used to improve the fatigue life of metal components in the aerospace industry. This process is accomplished by bombarding the surface of a metallic component with shots at a high velocity that induce a plastic deformation layer near the surface. This plastic deformation leads to a residual compressive stress field in the peened surface that reduces the likelihood of premature failure under cyclic loading conditions and therefore improves the fatigue life of the peened component.
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会议论文
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依托单位:
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海外基金