منابع مشابه
Photoelastic Determination of Mixed Mode Stress Intensity Factors
A two dimensional finite model with inclined crack at different crack angles are being analyzed in mixed mode condition using photo elasticity method for the determination of Stress Intensity Factors. The well-known Sih’s equation and three points deterministic approach is used for the determination of stress intensity factors. The effects of biaxial load factor, crack angle, size factors were ...
متن کاملTwo-dimensional photoelastic stress analysis of traumatized incisor.
In this study, stress of traumatized incisor and the effect of stress on tooth and alveolar bone was studied with two-dimensional photoelasticity. Two homogeneous two-dimensional maxillary central incisor models were prepared. Loads were applied to the labial side of incisal edge and middle third of the crown at angles of 45 degrees and 90 degrees. It was observed that stress was increased on t...
متن کاملPhotoelastic stress analysis of silastic poppets in prosthetic heart valves.
Some prosthetic heart valves with Silastic ball poppets undergo degeneration and variance. The problem is avoided with metal poppets; however, their impact can damage the cloth coverings on the struts, resulting in distorted blood flow paths. Consequently, renewed interest in mOd-cured Silastic poppets and inserts is developing. With photostress equipment, we analyzed two spherical poppet model...
متن کاملPhotoelastic analysis of stress generated by Connecticut Intrusion Arch (CIA)
OBJECTIVE The present in vitro study evaluated, by means of the photoelastic technique, the effects generated by the Connecticut Intrusion Arch (CIA), with a 90o bend on the distal surface of molar tubes and using the 4 x 2 appliance on the anterior and posterior regions of the upper dental arch. METHODS Five models were manufactured, in which two different clinical situations were correlated...
متن کاملReflection photoelastic stress analysis of a dental bridge.
In stress analysis applications emphasis is placed on careful determination of the stresses for the improvement of design. In nondestructive testing importance is placed on reliability and quality, and as a result of this, observation of surface strains is of interest. Earlier photoelastic studies by El-Ebrashi et al 1-7 concerned, for the most part, two dimensional photoelasticity. In two dime...
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ژورنال
عنوان ژورنال: Journal of the Japan Welding Society
سال: 1971
ISSN: 0021-4787,1883-7204
DOI: 10.2207/qjjws1943.40.198