ISSN:
1573-9325
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Conclusions 1. A method was proposed of evaluating the crack formation resistance of CRGPs based on the determination of the value of stress intensity factor Ko corresponding to the first AE signal. 2. The detection of the stages of initiation and propagation of the cracks on the basis of the AE signals made it possible to determine accurately the start of crack displacement in all the types of the CRGPs and increase the accuracy of determination of the values of stress intensity factor KQ. 3. The experiments have shown that the theoretically derived relationship between the factors characterizing the resistance of the material to crack propagation KQ and initiation Ko for the type CRGP composites must be determined more accurately. 4. For the examined CRGP structures, we determine the values of the stress intensity factors KQ and Ko in the initial condition and after 3 months exposure of the specimens in alkali and hydrochloric acid at temperatures of 23 and 80°C. This made it possible to evaluate and compare the cracking resistance of the materials and their efficiency in the corresponding service conditions.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01533786
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