Residual Stresses Introduced to Composite Structures due to the Cure Regime: Effect of Environment Temperature and Moisture

Table 5

Principal stresses obtained from compression experiments on EP 280 Prepreg.

Test number	Mechanical stresses [10]			Residual stresses
	(MPa)	(MPa)	(MPa)	(MPa)	(MPa)	(MPa)
1	−77.18	−253.42	−95.60	5.07	4.75	−5.32
2	−86.29	−281.52	−106.37	5.07	4.75	−5.32
3	−63.60	−207.49	−78.39	5.07	4.75	−5.32
4	−66.01	−227.05	−84.19	5.07	4.75	−5.32
5	−55.62	−187.58	−69.57	5.07	4.75	−5.32
6	−57.23	−195.18	−72.30	5.07	4.75	−5.32
7	−53.06	−191.05	−67.15	5.07	4.75	−5.32
8	−57.59	−207.38	−72.89	5.07	4.75	−5.32
9	−52.71	−189.80	−66.72	5.07	4.75	−5.32
10	−49.27	−198.03	−64.17	5.07	4.75	−5.32
11	−48.49	−194.87	−63.15	5.07	4.75	−5.32
12	−29.40	−154.37	−45.24	5.07	4.75	−5.32
13	−24.03	−126.38	−37.12	5.07	4.75	−5.32
14	−30.58	−160.81	−47.23	5.07	4.75	−5.32
15	15.19	−137.00	−23.55	5.07	4.75	−5.32
16	13.90	−125.36	−21.55	5.07	4.75	−5.32
17	14.73	−132.91	−22.85	5.07	4.75	−5.32
18	22.37	−134.04	−22.73	5.07	4.75	−5.32
19	20.67	−126.11	−21.69	5.07	4.75	−5.32