Search Results for Striations

Fig. 6 TEM fractograph showing fatigue-crack growth striations. 39,000× More

Fig. 33 Fatigue striations in 18-8 austenitic stainless steel tested in rotating bending. (a) Fine striations were located midway between origin and final overload fracture, while (b) coarse striations were located closer to the overload area. Overall direction of crack growth in these SEM More

Fig. 34 SEM view of fatigue striations in aluminum forging tested under cyclic loading More

Fig. 35 Striations observed by SEM on rotating beam fatigue specimen made of cold-worked electrolytic tough pitch copper. Crack growth direction is from upper right to lower left, and specimen was tested at relatively high stress. More

Fig. 49 SEM view of fatigue striations in medium-density polyethylene, laboratory tested at 0.5 Hz with maximum stress 30% of the yield strength. Crack growth is upward in this view. Original magnification 200×. Source: Ref 4 More

Fig. 24 Fatigue striations on the fracture surface of a polycarbonate plumbing fixture after field failure. 32× More

Fig. 17 Ductile and brittle striations. (a) Schematic of different types of ductile and brittle striations. (b) Ductile striations in 718 aluminium alloy. (c) Brittle fatigue striations of 2014 aluminium alloy. Note cleavage facets running parallel to direction of crack propagation and normal More

Fig. 13 Stress-corrosion cracking striations on the fracture surface of 316L stainless steel. The arrow indicates the crack-growth direction. 10,000×. Courtesy of I. Le May, Metallurgical Consulting Services Ltd. More

Fig. 10 Microbially induced corrosion showing striations in the bottom and tunneling into the walls of overlapping pits, as described in Ref 32 More

Fig. 1 Examples of fatigue striations seen on the pin surface from the Loran tower failure More

Fig. 2 Plot of striations per micron versus distance for a broken pin from the Loran tower. The original investigator cut the origin out, so this plot begins at as close as it was possible to get to the origin and extends to the final rupture. The plot was integrated graphically, revealing More

Fig. 14 A local area of fatigue striations on an extruded 2024 aluminum alloy component More

Fig. 13 Ductile fatigue striations in aluminum alloy 2024-T3. (a) The uniformity of the crack-propagation process is well illustrated. There was little or no interaction of the fracture process with the inclusion within the rectangle. The long ridges are believed to be high-angle steps More

Fig. 21 Fatigue striations in a cast A356 aluminum alloy. (a) 500×. (b) 1500× More

Fig. 52 Fatigue striations in a vanadium HSLA steel. (a) L-T orientation; Δ K = 32.3–34.3 MPa m . da / dN = 3.3–3.8 × 10 −5 cm/cycle. (b) T-L orientaton; Δ K = 24.3–25.5 MPa m , da / dN = 9.4–11.2 × 10 −6 cm/cycle. Source: Ref 54 More

Fig. 7 Fractograph showing striations formed on the fracture surface of a bolt More

Fig. 8 Fractograph showing striations and dimples formed on the fracture surface of a bolt. Areas S and L indicate small and large striations, respectively More

Fig. 4 SEM micrographs of location E in Fig. 3 , showing fatigue striations. (a) 491×. (b) 2520×. More

Fig. 5 SEM micrograph showing fine and coarse fatigue striations on the crack surface. Arrow indicates crack growth direction. More

Fig. 7 SEM fractograph showing indications of fatigue striations. More