Fatigue characteristics of granular materials

Experimental investigation of the swelling/shrinkage of a hydride bed in a cell during hydrogen absorption/desorption cycles

“…The phenomenon of decrepitation accordingly explains the existence of an extremely highly developed mechanism of grain segregation [27,28] in the case of polydisperse grain populations. Finally, decrepitation causes fracturing of the grains into grains of smaller sizes which are better able to fill the spaces between the largest particles [26]. In parallel, segregation causes migration of the small particles and their accumulation toward the bottom of the cell.…”

Breakage Probability of Stressed Granules Using a Degradation Model

“…The breakage behavior of granules under cyclic stressing was determined in various disciplines. Several investigators studied the behavior of particulate materials using fatigue tests such as air-gun [1][2][3], drop tests [4][5][6], compression [7][8][9][10][11][12], multiple impacts [13][14][15][16], and within integrated industrial units [17][18][19]. Some tests were also concolidated with breakage simulation [20][21][22].…”

A Comparison of Particle Wear in Pneumatic Transport

“…Particle fragmentation has been addressed in several studies (Salman et al, 2002), revealing the existence of threshold velocities below which particle degradation is minimized. Fatigue phenomena (Goder et al, 2002) and repetitive processes (Konami et al, 2002) also play an important role. Such complexity often leads to concentrating experimental studies either on basic mechanisms or on transport system parameters, resulting in two extreme cases to be considered.…”