基于电子散斑干涉的纵树型叶根应力场测试技术  

Stress Field Research of Fir-tree Blade Root Using Electronic Speckle Pattern Interferometry

作　　者：翟栋[1] 何斌[1] 

机构地区：[1]东方汽轮机有限公司,四川德阳618000

出　　处：《东方汽轮机》2013年第2期6-10,共5页Dongfang Turbine

摘　　要：文章对比研究了应变片、光弹性试验和电子散斑干涉技术测量叶根应变场的优缺点。针对公司某纵树型叶根,首次采用电子散斑干涉技术测量了其在给定载荷下的应力分布。试验表明,电子散斑干涉技术是测量叶根应力分布的有效方法。This paper compares the advantages and disadvantages of the photoelastic technique （PT）, the strain gauge measurement technique （SGMT） and electronic speckle pattern interferometry （ESPI） in blade root stress distribution measurement. The stress distribution of a fir-tree blade root is firstly tested by ESPI under the rated centrifugal force. As shown by the test, ESPI can effec- tively reflect the stress distribution of the blade root.

关 键 词：纵树型叶根 电子散斑干涉技术 光弹性试验 应力场 

分 类 号：O346.1[理学—固体力学]