Accelerated Fatigue Test in Mechanical Components

The Influence Analysis of Fatigue Limit for Mechanical Components Based on Standard Deviation of Full Scale Sub-Sample

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.86.108 ◽

2011 ◽

Vol 86 ◽

pp. 108-111

Author(s):

Bin Ouyang ◽

Wen Qiang Ding

Keyword(s):

Standard Deviation ◽

Fatigue Limit ◽

Fatigue Test ◽

Full Scale ◽

Test Results ◽

Initial Test ◽

Mechanical Component ◽

Epicyclic Gear ◽

Mechanical Components ◽

System Errors

Full scale sub-sample fatigue test of the mechanical components is direct relationship with the equalizing value of fatigue limit and the logarithmic standard deviation of the part. So, the full scale sub-sample fatigue test of the mechanical component plays a critical role on the assessment of the fatigue life. In this paper, the author implemented the standard deviation for the initial test data of full scale sub-samples with an epicyclic gear as example based on working standard of steeliness mechanical part. The test results declared that there were rather larger dispersion coefficients of standard deviation which influenced the safety fatigue limit of mechanical component due to a larger system errors were presence in the process of initial test. Compared to the previous test results, the safety fatigue limit of the steeliness epicyclic gear had been developed significantly by retest with reduced system errors.

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EVALUATION OF MECHANICAL SYSTEMS USED IN PERFUSION

Acta Endocrinologica ◽

10.1530/acta.0.069s044b ◽

1972 ◽

Vol 68 (2_Supplb) ◽

pp. S44-S73 ◽

Cited By ~ 3

Author(s):

Eugene F. Bernstein

Keyword(s):

Mechanical Systems ◽

Organ Perfusion ◽

Critical Factors ◽

System 2 ◽

Common Problems ◽

Mechanical Components ◽

Perfusion Experiment ◽

Selection Of

ABSTRACT Among the critical factors in organ perfusion are (1) the mechanical components of the system, (2) the composition of the perfusate, and (3) the perfusing conditions. In this review, particular consideration is given to the pump, the oxygenator, and cannulas in such systems. Emphasis is placed upon the selection of pertinent equipment for the goals of a particular perfusion experiment, based upon the criteria of adequacy of the perfusion. Common problems in organ perfusion are summarized, and potential solutions to the perfusion problem, involving either biologic or mechanical extracorporeal systems, are suggested.

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