828/DEA: Cohesive Failure

KIC from pre-cracked 3-pt bend samples at 23C = 0.69 ± 0.06 MPa-m1/2

Double notched tensile dogbone loads at failure at 23C (0.3mm tip radius).

Notch Length (mm)Load (N)
13419
13339
13166
13272
13468
22549
22771
22367
22677
22713
32153
31985
31918
32136
32029

Ball-into-a-plate stresses to fail at 23C.

Plate Diameter (mm)Plate Thickness (mm)Ball Diameter (mm)Load at Failure (kN)
2651316
26121927
26231935
4651923

Hemispherically notched 3-pt bend stresses to fail at 23C.

Notch Length (mm)Load (N)
01554
01376
01199
4932
41021
41012
8786
8764
8737

Saw cut 3-pt bend stresses to fail at various temperatures.

Temperature (C)Load (N)Error (+-)
028750
2226930
5023550
6519030

tensile creep times to fail at 23C

Applied Load (MPa)Time to Fail (min)
69 (slow cool)3.3
62 (slow cool)37
55 (slow cool)3.5
52 (slow cool)19

Reference:

Adolf, D. B.; Chambers, R. S.; Elisberg, B.; Stavig, M.; Ruff, M. J. Appl. Polym. Sci. submitted 2010.