Fatigue of Metallic Materials

Abstract

Klesnil and Lucas have been actively involved in research on the basic aspects of fatigue for a score of years and are deservedly well recognized for their many contributions to our knowledge of the topic, particularly in areas of dislocation structures, cyclic stress-strain behavior and crack growth analysis, for example. The present book is organized about these areas of fatigue with which they have dealt and the treatments reflect their perspective. Their views have also been influenced by the works of many other researchers as indicated by the 410 references cited from countries in the east as well as the west. The seven chapters cover: cyclic stressstrain response; fatigue crack nucleation; fatigue-crack propagation; fatigue-life curves; notched behavior; and fatigue life under random loading. Topics such as elevated temperature fatigue, corrosion fatigue, and the influence of metallurgical structure on fatigue are not treated to any extent. The text, which has been translated from Czechosloviakian to English by Lucas, is clearly written. The treatment is based on current knowledge of the underlying mechanisms of fatigue crack initiation and growth, and since this knowledge is far from complete, it is not surprising that the authors must resort to semi-empirical approaches to provide quantitative treatment of the subject. The book should be of value to researchers and graduate students concerned with the subject of fatigue.

Cyclic anelasticity of metals

“…Such stress amplitudes represent 79 to 92 % of the fatigue limit for 3 × 10 6 cycles until fatigue fracture. These partial results are in compliance with the measurements of other authors [11,16].…”

“…Both identified non-continuities in the cyclic properties of the material are caused by the difference in the mechanism of plastic strain below or above the point of non-continuity. Based on the analysis of deformation processes, it is obvious that the amplitude of plastic strain ε ap consists of the following components [11,17,18]:…”

T-T fatigue behaviors of composite T800/MTM46 cross-ply laminateand reliability analysis onfatigue life

“…40,41 However, the Cv of fatigue life data under 95%-75% UTS is 0.6, 0.6, 0.72, 0.74, and 0.54. Thus, there is no clear trend in scatter of fatigue life data for T800/ MTM46 composite laminates, which is far different from the fatigue life data of traditional metallic materials.…”

“…Through setting y = lgðSÞ; x = lgN p;g , Q = lgðC p;g Þ=m p;g , and W = À 1=m p;g , equation (39) can be simplified to equation (40) …”

The Effect of Pitting Corrosion on the Fatigue Strength of 304 and 316 Stainless Steel Alloys

“…As a result, it could be concluded that the deterioration effect of existing either one pit or multi-pits depends mainly on pitting corrosion effect rather than the alloy under investigation. In conclusion, this data is very important for the designer in order to determine the service life of machine components and structure due to economic and environmental reasons [Murakami (2002); Wulpi (2000); Klesnil and Lukas (1980); Koterazawa (1990)]. The effect of pitting on crack initiation and propagation during the fatigue test has been studied.…”