An investigation on strain/stress distribution around the overlap end of laminated composite single-lap joints

Wang, Z.Y.; Wang, L.; Guo, Weiqi; Deng, Haiqin; Tong, Jing; Aymerich, Francesco

doi:10.1016/j.compstruct.2008.11.002

Cited by 42 publications

(18 citation statements)

References 14 publications

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“…They concluded that the shear strain decreases with increase in distance from the free edge and using these measurements they estimated the in-situ shear modulus of the adhesive. Wang et al [18] have presented the results of a combined experimental and finite element investigation on strain/stress distributions around the overlap ends of laminated composite single-lap joints. They concluded that the spew fillets with high rectangular segments and composite bulges at the overlap ends have impacts on the load carrying ability and stresses peak at the overlap end.…”

Section: Introductionmentioning

confidence: 99%

“…A detailed review on numerical modeling of adhesively bonded joints is presented by da Silva and Campilho [8] and He [9]. To validate the numerical predictions researchers have used several experimental techniques such as strain gauges [10][11][12], moiré interferometry [10,13], photoelasticity [14] and digital image correlation (DIC) [15][16][17][18][19][20][21][22][23][24][25]. DIC has been used extensively in recent years because of its advantages over the other experimental technique [22,[26][27][28].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Assessment of local strain field in adhesive layer of an unsymmetrically repaired CFRP panel using digital image correlation

Kashfuddoja

Ramji

2015

International Journal of Adhesion and Adhesives

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Assessment of local strain field in adhesive layer of an unsymmetrically repaired CFRP panel using digital image correlation

Kashfuddoja

Ramji

2015

International Journal of Adhesion and Adhesives

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“…The DIC method is very suitable for composite structures as they provide full field strain mapping under loading which is vital for the understanding of their mechanics. Wang et al [21] investigated strain/stress distribution around the overlap end of laminated composite SL joints having spew fillets. Caminero et al [22] used DIC techniques to characterize damage and performance of adhesively bonded patch repairs in composite panels.…”

Section: Introductionmentioning

confidence: 99%

Strain Profile Measurement for Structural Health Monitoring of Woven Carbon-fiber Reinforced Polymer Composite Bonded joints by Fiber Optic Sensing Using an Optical Backscatter Reflectometer

Bernasconi

Kharshiduzzaman

Comolli

2015

The Journal of Adhesion

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In order to monitor crack initiation and propagation under static and fatigue loading in adhesively bonded joints, strain profile measurement such as backface strain (BFS) is a very efficient technique. In single lap (SL) joints, crack initiation and propagation in the glue line can be monitored by detecting the negative peak of the strain profile. Therefore, the accuracy of the monitoring system greatly depends on detecting the strain profile correctly and accurately. Previously, an array of electrical strain gages as well as fiber Bragg grating (FBG) sensors had been used successfully to capture the profile of BFS of a SL joint by applying sensors on the backface of an adherend, near the overlap zone. In this work, the backface technique is improved by replacing an array of strain sensors by an ordinary optical fiber (without FBG sensors) connected to an optical backscatter reflectometer. The great advantage of this system over the more conventional arrays of FBG is that the entire length of the fiber can be used for sensing strains, and hence it provides a better spatial resolution. The experimental results are compared with finite element analyses, which were further validated by two-dimensional digital image correlation measurements

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“…Therefore, it is very important to calculate the accurate stress and strain distribution of the bonded joint for a reasonable strength assessment of the adhesively bonded CFRP sheets. FEM was used for stress distribution analysis of single-lap joints [12,13]. In this paper, 3D solid brick elements were used for FEA (Finite element analysis) model.…”

Section: Stress Distribution Analysis Analysis Modelmentioning

confidence: 99%

Tensile Strength Assessments of CFRP Adhesive Bonded Joint

Kebede¹,

Kim²,

Bae³

2017

Int J Adv Tech

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In this paper, stress distribution analysis and tensile strength assessment of CFRP bonded joint were studied. First a mixture of Epoxy adhesives and MWCNT was fabricated. Since failure is initiated at the ends of overlap, the stress distribution at the ends of the overlap and bonded joint was numerically analyzed. After the stress distributions were analyzed based on the result obtained the experimental steps were followed to assess the tensile strength of bonded joint. The stress distribution analysis and the tensile strength assessment results showed an agreement that the geometrical factors directly affect the reliability of the bond.

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An investigation on strain/stress distribution around the overlap end of laminated composite single-lap joints

Cited by 42 publications

References 14 publications

Assessment of local strain field in adhesive layer of an unsymmetrically repaired CFRP panel using digital image correlation

Assessment of local strain field in adhesive layer of an unsymmetrically repaired CFRP panel using digital image correlation

Strain Profile Measurement for Structural Health Monitoring of Woven Carbon-fiber Reinforced Polymer Composite Bonded joints by Fiber Optic Sensing Using an Optical Backscatter Reflectometer

Tensile Strength Assessments of CFRP Adhesive Bonded Joint

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