نتایج جستجو برای: fatigue strength and failure
تعداد نتایج: 16920160 فیلتر نتایج به سال:
what miller wants is a theatre of heightened consciousness. he speaks of two passions in a man, the passion to "feel" and the passion "know". he belives that we can have more of the latter. he says: drama is akin to the other inventions of man in that it ought to help us know more and not merely to spend our feelings. the writing of the crucible shows us that he is trying to give more heightene...
The effect of microstructure three dissimilar Ti17–Ti64 linear friction welded joints on the strength, fatigue strength and fracture toughness was studied. A special attention paid to role soft contaminants α precipitate depletion. Three were produced: one in as machined state after electrical discharge machining, ground prior welding, post-weld heat treated. weld centre zone (WCZ) exhibited an...
an understanding of the strength of rice grains as affected by moisture content and temperature is important for analysis and prediction of cracking and/or breakage behavior during handling and processing. further, the magnitude of these properties at various moisture contents and temperatures is needed for the accurate design of milling machinery so that grain damage is minimized. to determine...
A novel approach for measuring thermal fatigue lifetime and ultimate strength of patterned thin films on substrates is presented. The method is based on controlled application of cyclic joule heating by means of low-frequency, high-density alternating current. Such conditions preclude electromigration, but cause cyclic strains due to mismatch in coefficients of thermal expansion between film an...
Background and Aim: Debonding is the most common failure type of fiber posts. This in vitro study aimed to evaluate the bond strength of 3 different fiber posts cemented with a resin luting agent in three regions of prepared post spaces after being subjected to termocycling. Materials and Methods Thirty six mandibular first premolars were sectioned at the cemento-enamel junction and were treat...
The application of probabilistic methods to the life prediction of fatigue vulnerable structures is becoming increasingly important. In-service inspection and repair/replacement can be an effective strategy for decreasing fatigue failure probability. However, inspection introduces additional random variables that must be considered in an overall lifetime reliability assessment. In this study, a...
OBJECTIVE The purposes of this research were to (1) compare the shear-peel bond strength (SPBS) of a band of a fixed space maintainer (SM) cemented with five different adhesive cements; and (2) compare the survival time of bands of SM with each cement type after simulating mechanical fatigue stress. MATERIALS AND METHODS Seventy-five teeth were used to assess retentive strength and another 50...
Tension Leg Platform design is a challenging and popular area of research in the offshore oil industry. In order to compete in the International Student Offshore Design Competition (ISODC), a Tension Leg Platform (TLP) was designed. Our TLP design addresses five fundamental areas of technical competency (General Arrangement and Overall Hull/System Design, Weight, Buoyancy and Stability, Global ...
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