Search Results for thermal fatigue

Fig. 3 Thermal fatigue failure and conventional fatigue crack-propagation fracture during reversed-load cycling of acetal. Source: Ref 36 More

Fig. 14 Isothermal fatigue life calculation for thermal fatigue resistance approximation. (a) Package/solder joint geometry. L is the package size (distance between solder joints), α i is the thermal expansion coefficient, and t is the solder joint gap. (b) Fatigue life versus total shear More

Fig. 31 Thermal fatigue cracking of a spur gear. (a) Radial cracking due to frictional heat against the thrust face. 0.4×. (b) Progression of thermal fatigue produced by the frictional heat. 1.5× More

Fig. 29 Thermal fatigue plus liquid-ash corrosion on water walls leads to circumferential grooving. The cross section in an axial plane nearly parallel to the tube axis shows the deep fingerlike penetrations into the wall. Etched with nital. 210×. Courtesy of Riley Stoker Corp. More

Fig. 33 Crazed pattern of thermal fatigue cracking on the outer surface of a stainless steel tube. See also Fig. 37 . Approximately 4× More

Fig. 37 Stainless steel superheater tube that failed by thermal fatigue and stress rupture. (a) Photograph of the tube showing thick-lip rupture. (b) Macrograph of a section taken transverse to a fracture surface of the tube showing that thermal fatigue cracking started at the outside surface More

Fig. 4 Examples of abrasive wear with varying degrees of thermal-fatigue cracking in conventional closed-die forging applications. (a) Abrasive wear with some indication of thermal-fatigue cracking in top blocker punch. (b) Abrasive wear with more prominent radial lines indicative of thermal More

Fig. 9 Results of thermal fatigue tests on various cast irons; specimens cycled betweem 650 and 20 °C (1200 and 70 °F). FG, flake graphite; CG, compacted graphite; SG, spheroidal graphite; UTS, ultimate tensile strength. Source: Ref 10 Composition C Si Mn P Mg Other 2.96 More

Fig. 10 Results of constrained thermal fatigue tests conducted between 100 and 540 °C (212 and 1000 °F). CG, compacted graphite; FG, flake graphite. Source: Ref 11 More

Fig. 27 Results of constrained thermal fatigue tests conducted between 100 and 540 °C (212 and 1000 °F). Source: Ref 23 More

Fig. 29 Results of thermal fatigue tests on various cast irons; specimens cycled between 650 and 20 °C (1200 and 70 °F). Source: Ref 22 Composition C Si Mn P Mg Other 2.96 2.90 0.78 0.66 … 0.12 Cr 3.52 2.61 0.25 0.051 0.015 … 3.52 2.25 0.40 0.054 0.015 More

Fig. 2 Flame impingement on the button sample in a thermal fatigue test rig More

Fig. 3 Thermal fatigue edge-cracking rate for thick ZrO 2 coatings as a function of coating density. Thermal fatigue test with peak temperature of 1400 °C (2550 °F) and 1.1 to 1.3 mm (0.4 to 0.5 in.) thick oxide. Specimen numbers allow correlation to Fig. 4 . Source: Ref 2 More

Fig. 74 Thermal fatigue cracking on the outer surface of a stainless steel tube More

Fig. 75 Microstructure of failed water-wall tube showing thermal fatigue cracks emanating from outside-diameter scale deposits. Original magnification: 200× More

Fig. 18 Fireside surface of a superheater tube shows apparent thermal-fatigue cracks at sites displaying visual alligatoring. Original magnification: 500×. Source: Ref 65 . Courtesy of D.N. French More

Fig. 54 Effect of section size on thermal-fatigue resistance of 9.5 and 13 mm ( 3 8 and 1 2 in.) diam RA 330 bars. Both bars were taken from the same basket used in a carburizing furnace. 4.5× More

Fig. 23 Results of constrained thermal fatigue tests conducted between 100 and 540 °C (212 and 1000 °F). CG, compacted graphite; FG, flake graphite. Source: Ref 18 More

Fig. 25 Results of thermal fatigue tests on various cast irons; specimens cycled between 650 and 20 °C (1200 and 70 °F). FG, flake graphite; CG, compacted graphite; SG, spheroidal graphite; UTS, ultimate tensile strength. Source: Ref 17 More

Fig. 26 Thermal fatigue cracking at weld fusion line between grade 91 pipe and butter layer. Source: Ref 38 . Courtesy of C. Matherne More