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Titolo:
Effect of temperature on the quasi-static strength and fatigue resistance of bonded composite double lap joints
Autore:
Ashcroft, IA; Hughes, DJ; Shaw, SJ; Wahab, MA; Crocombe, A;
Indirizzi:
Loughborough Univ Technol, Dept Mech Engn, Loughborough LE11 3TU, Leics, England Loughborough Univ Technol Loughborough Leics England LE11 3TU cs, England DERA, Struct Mat Ctr, Farnborough, Hants, England DERA Farnborough Hants England ruct Mat Ctr, Farnborough, Hants, England Univ Surrey, Sch Mech & Mat Engn, Guildford GU2 5XH, Surrey, England Univ Surrey Guildford Surrey England GU2 5XH ord GU2 5XH, Surrey, England
Titolo Testata:
JOURNAL OF ADHESION
fascicolo: 1, volume: 75, anno: 2001,
pagine: 61 -
SICI:
0021-8464(2001)75:1<61:EOTOTQ>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
ADHESIVE JOINTS;
Keywords:
fatigue; adhesive joints; creep; CFRP; finite element analysis;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Ashcroft, IA Loughborough Univ Technol, Dept Mech Engn, Loughborough LE11 3TU, Leics, England Loughborough Univ Technol Loughborough Leics England LE11 3TU
Citazione:
I.A. Ashcroft et al., "Effect of temperature on the quasi-static strength and fatigue resistance of bonded composite double lap joints", J ADHESION, 75(1), 2001, pp. 61

Abstract

Fibre reinforced polymer composites (FRP`s) are often used to reduce the weight of a structure. Traditionally the composite parts are bolted together. however, increased weight savings can often be achieved by adhesive bonding or co-curing the parts. The reason that these methods are often not usedfor structural applications is due to the lack of trusted design methods and concerns about long-term performance. The authors have attempted to address these issues by studying the effects of fatigue loading, test environment and pre-conditioning: on bonded composite joints. Previous work centeredon the lap-strap joint which was representative of the long-overlap jointscommon in aerospace structures. However. it was recognised that in some applications short-overlap joints will be used and these joints might behave quite differently. In this work, double-lap joints were tested both quasi-statically and in fatigue across the temperature range experienced by a jet aircraft. Two variants on the double-lap joint sample were used for the testing, one with multidirectional (MD) CFRP adherends and the other with unidirectional (UD) CFRP adherends. Finite element analysis was used to analysestresses in the joints. It was seen that as temperature increased both thequasi-static strength and fatigue resistance decreased. The MD joints werestronger at low temperatures and the UD joints stronger at high temperatures. It was proposed that this was because at low temperature the strength was determined by the peak stresses in the joints, whereas. at high temperatures, strength is controlled by creep of the jointswhich is determined by the minimum stresses in the joint. This argument was supported by the stressanalysis.

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Documento generato il 25/11/20 alle ore 09:55:24