Observation of Stress Field Around an Oscillating Crack Tip in a Quenched Thin Glass Plate

Autor:	Hisao Kikuta, Satoru Yoneyama, Masahisa Takashi, Kenichi Sakaue
Rok vydání:	2007
Předmět:	Photoelasticity Materials science business.industry Mechanical Engineering Crack tip opening displacement Aerospace Engineering Fracture mechanics Stress field Crack closure Optics Mechanics of Materials Mode coupling Composite material business Stress intensity factor Stress concentration
Zdroj:	Experimental Mechanics. 48:367-374
ISSN:	1741-2765 0014-4851
DOI:	10.1007/s11340-007-9078-0
Popis:	The variation of stress field around an oscillating crack tip in a quenched thin glass plate is observed using instantaneous phase-stepping photoelasticity. The successive images around the propagating crack are recorded by a CCD camera that is equipped with a pixelated micro-retarder array. Then, the phase maps of the principal stress difference and the principal direction are easily obtained even though the photoelastic fringes cannot be visualized. The path of the crack growth as well as the stress intensity factors and the crack tip constraint are obtained from these phase distributions. Results show that the mode I stress intensity factor and the crack tip constraint vary remarkably with the crack growth. In addition, the results show that the mode-II stress intensity factor exists even though the crack propagates smoothly.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::98369dc4e1aab02f90a66ba835420c85 https://doi.org/10.1007/s11340-007-9078-0 Zobrazit plný text záznamu Full text from SpringerLink