SUN and SINGH: MULTIPLE MATRIX CRACKING matrix debond 43 a) Cracks# 1, 2, 3 at 18N b)Cracks# 1, 2, 3, 4 at 23N 2-1=2-00 c) Cracks#f 1, 2, 3, 4, 10 at 28N d) Cracks#1,2,3,4,10,12at33N e)Matrix crack saturation and associated debond length at 58N Fig. 6. Optical micrographs showing the progression of debonding (patterns)with increasing applied load Inside pin Inside pin N/MPa) :}16 46/217 28/132 Fig. 7. Evolution and distribution of matrix cracks on the tensile face of the specimenFig. 6. Optical micrographs showing the progression of debonding (patterns) with increasing applied load. Fig. 7. Evolution and distribution of matrix cracks on the tensile face of the specimen. SUN and SINGH: MULTIPLE MATRIX CRACKING 1663