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ASTM Selected Technical Papers
Durability Testing of Nonmetallic Materials
By
RJ Herling
RJ Herling
1
Atlas Electric Devices Company
?
Chicago, IL Symposium Chairman and Editor
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ISBN-10:
0-8031-2407-4
ISBN:
978-0-8031-2407-3
No. of Pages:
241
Publisher:
ASTM International
Publication date:
1996

The objective of this investigation was to estimate the creep life of glass fiber reinforced plastic (GFRP) materials subjected to stress-corrosive environments using acoustic emission (AE). The laminates were fabricated using combinations of rigid bisphenolic polyester resin (LP-1), flexible vinylester resin (R806), random fiber mat and woven cloth. The creep tests were conducted in 5% nitric acid (HNO3) environment. The rigid matrix composites displayed higher AE count rate than the flexible matrix composites. For given creep testing conditions, the woven cloth reinforced specimens displayed higher number of AE counts than the random mat reinforced specimens. The creep life decreased with increasing creep stress, whereas the AE count rate increased with increasing creep stress. A linear relationship was found between the creep life and the AE count rate.

1.
Jones
,
F.R.
,
Rock
,
J.W.
and
Wheatley
,
A.R.
, “
Stress Corrosion Cracking and Its Implications for the Long Time Durability of E-Glass Fiber Composites
,”
Composites
, Vol.
14
, No.
3
,
1983
, pp 262–269.
2.
Carswell
,
W.S.
, “
Environmental Effects on Fatigue and Creep Rupture of Glass Reinforced Composites
,”
ASME Petroleum Division
, Vol.
24
,
1988
, pp 105–110.
3.
Hogg
,
P.J.
,
Hull
,
D.
and
Legg
,
M.J.
, “
Failure of GRP in Corrosive Environments'
Composite Structures
 0045-7949,
1981
, pp 106–122.
4.
Hogg
,
P.J.
, “
Factors Affecting the Stress Corrosion of GRP in Acid Environments
”,
Composites
, Vol.
14
, No.
3
,
1983
, pp 254.
5.
Hogg
,
P.J.
, “
A Model for Stress Corrosion Crack Growth in Glass Reinforced Plastics
”,
Composites Science and Technology
, Vol.
38
,
1990
, pp 23–42
6.
Marshall
,
G.P.
and
Harrison
,
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, “
Design for Toughness in Polymers. 2-Environmental Stress Corrosion of Chemically Resistant Polyester Resins and Glass Reinforced Laminates
”,
Plastics and Rubber Processing and Applications
, Vol.
2
, No.
3
,
1982
, pp 269–279.
7.
Kumosa
,
M.
,
Hull
,
D.
and
Price
,
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, “
Acoustic Emission from Stress Corrosion Cracks in Aligned GRP
,”
Journal of Materials Science
 0022-2461, Vol.
22
,
1987
, pp 331–336.
8.
Hill
,
R.
,
Cowking
,
C.
and
Carswell
,
W.S.
,“
An Acoustic Emission Study of Stress Corrosion in Chopped Strand Mat GRP Composites
,”
Composites
, Vol.
20
, No.
3
,
1989
, pp 215–222.
9.
Fujii
,
Y.
,
Maekawa
,
K.
,
Hamada
,
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,
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,
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,
A.
and
Yoshiki
,
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, “
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,” in A.Miravete, ed., Proceedings of ICCM 9,
Woodhead Publishing Limited
,
Madrid
,
1993
, pp 562.
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