Influence of Adhesive Variation and Inserts on The Strength of CFRP-to-CFRP Single Lap Bonded Joint

Kosim Abdurohman; Rian Suari Aritonang; Rezky Agung Pratomo; Riki Ardiansyah; Fajar Ari Wandono

Article Details

Influence of Adhesive Variation and Inserts on The Strength of CFRP-to-CFRP Single Lap Bonded Joint

Authors:

Kosim Abdurohman | Rian Suari Aritonang | Rezky Agung Pratomo | Riki Ardiansyah | Fajar Ari Wandono

Publisher:

Gazi University

Main Topics:

Material Design and Behaviors | Composite and Hybrid Materials

Journal:

Gazi University Journal of Science Vol.38 Issue 2, pp.937-957

Document Type:

Article

Publication Date:

1/2025

Document Language:

English

Document ID (Org No.):

2001348413

pISSN:

2147-1762

Keywords:

Abstract:

 This study aims to compare the adhesion properties of single lap joints fabricated from carbon fiber-reinforced vinyl ester composites, focusing on the effects of different adhesives and inserts. The research involved evaluating six adhesives: an aerospace-grade epoxy, two acrylic adhesives, two epoxy resins, and a vinyl ester resin. The substrates, produced via vacuum-assisted resin infusion with unidirectional carbon fiber and vinyl ester resin, were bonded using these adhesives. The impact of three inserts3D-printed polylactic acid PLA nets with 0.2 mm and 0.4 mm hole spacings, and an e-glass chopped strand mat CSMon the tensile properties of the SLJ was examined. Finite Element Analysis FEA predicted stress distributions in the joints. The results identified vinyl ester adhesive as the most suitable due to its superior lap shear strength and stiffness. Although all inserts reduced lap shear strength and modulus compared to specimens without inserts, the CSM insert showed the best performance among the inserts. The study highlights the importance of matching adhesive material to the resin used in the composite substrate, enhancing mechanical strength through better cross-linking reactions. The findings offer valuable insights for improving the design and performance of adhesively bonded joints in carbon fiber-reinforced vinyl ester composites, especially in applications requiring high strength and durability.

 This study aims to compare the adhesion properties of single lap joints fabricated from carbon fiber-reinforced vinyl ester composites, focusing on the effects of different adhesives and inserts. The research involved evaluating six adhesives: an aerospace-grade epoxy, two acrylic adhesives, two epoxy resins, and a vinyl ester resin. The substrates, produced via vacuum-assisted resin infusion with unidirectional carbon fiber and vinyl ester resin, were bonded using these adhesives. The impact of three inserts3D-printed polylactic acid PLA nets with 0.2 mm and 0.4 mm hole spacings, and an e-glass chopped strand mat CSMon the tensile properties of the SLJ was examined. Finite Element Analysis FEA predicted stress distributions in the joints. The results identified vinyl ester adhesive as the most suitable due to its superior lap shear strength and stiffness. Although all inserts reduced lap shear strength and modulus compared to specimens without inserts, the CSM insert showed the best performance among the inserts. The study highlights the importance of matching adhesive material to the resin used in the composite substrate, enhancing mechanical strength through better cross-linking reactions. The findings offer valuable insights for improving the design and performance of adhesively bonded joints in carbon fiber-reinforced vinyl ester composites, especially in applications requiring high strength and durability.

 This study aims to compare the adhesion properties of single lap joints fabricated from carbon fiber-reinforced vinyl ester composites, focusing on the effects of different adhesives and inserts. The research involved evaluating six adhesives: an aerospace-grade epoxy, two acrylic adhesives, two epoxy resins, and a vinyl ester resin. The substrates, produced via vacuum-assisted resin infusion with unidirectional carbon fiber and vinyl ester resin, were bonded using these adhesives. The impact of three inserts3D-printed polylactic acid PLA nets with 0.2 mm and 0.4 mm hole spacings, and an e-glass chopped strand mat CSMon the tensile properties of the SLJ was examined. Finite Element Analysis FEA predicted stress distributions in the joints. The results identified vinyl ester adhesive as the most suitable due to its superior lap shear strength and stiffness. Although all inserts reduced lap shear strength and modulus compared to specimens without inserts, the CSM insert showed the best performance among the inserts. The study highlights the importance of matching adhesive material to the resin used in the composite substrate, enhancing mechanical strength through better cross-linking reactions. The findings offer valuable insights for improving the design and performance of adhesively bonded joints in carbon fiber-reinforced vinyl ester composites, especially in applications requiring high strength and durability.

 This study aims to compare the adhesion properties of single lap joints fabricated from carbon fiber-reinforced vinyl ester composites, focusing on the effects of different adhesives and inserts. The research involved evaluating six adhesives: an aerospace-grade epoxy, two acrylic adhesives, two epoxy resins, and a vinyl ester resin. The substrates, produced via vacuum-assisted resin infusion with unidirectional carbon fiber and vinyl ester resin, were bonded using these adhesives. The impact of three inserts3D-printed polylactic acid PLA nets with 0.2 mm and 0.4 mm hole spacings, and an e-glass chopped strand mat CSMon the tensile properties of the SLJ was examined. Finite Element Analysis FEA predicted stress distributions in the joints. The results identified vinyl ester adhesive as the most suitable due to its superior lap shear strength and stiffness. Although all inserts reduced lap shear strength and modulus compared to specimens without inserts, the CSM insert showed the best performance among the inserts. The study highlights the importance of matching adhesive material to the resin used in the composite substrate, enhancing mechanical strength through better cross-linking reactions. The findings offer valuable insights for improving the design and performance of adhesively bonded joints in carbon fiber-reinforced vinyl ester composites, especially in applications requiring high strength and durability.

Article Details

Influence of Adhesive Variation and Inserts on The Strength of CFRP-to-CFRP Single Lap Bonded Joint

Authors:

Kosim Abdurohman | Rian Suari Aritonang | Rezky Agung Pratomo | Riki Ardiansyah | Fajar Ari Wandono

Publisher:

Gazi University

Main Topics:

Material Design and Behaviors | Composite and Hybrid Materials

Journal:

Gazi University Journal of Science Vol.38 Issue 2, pp.937-957

Document Type:

Article

Publication Date:

1/2025

Document Language:

English

Document ID (Org No.):

2001348413

pISSN:

2147-1762

Carbon Fiber

Adhesively Bonded Joint

Insert

Polylactic Acid

Chopped Strand Mat

Issues

Article Details

Influence of Adhesive Variation and Inserts on The Strength of CFRP-to-CFRP Single Lap Bonded Joint

Authors: Kosim Abdurohman | Rian Suari Aritonang | Rezky Agung Pratomo | Riki Ardiansyah | Fajar Ari Wandono

Publisher: Gazi University

Main Topics: Material Design and Behaviors | Composite and Hybrid Materials

Journal: Gazi University Journal of Science Vol.38 Issue 2, pp.937-957

Document Type: Article

Publication Date: 1/2025

Document Language: English

Document ID (Org No.): 2001348413

pISSN: 2147-1762

Carbon Fiber

Adhesively Bonded Joint

Insert

Polylactic Acid

Chopped Strand Mat

Issues

Authors:

Kosim Abdurohman | Rian Suari Aritonang | Rezky Agung Pratomo | Riki Ardiansyah | Fajar Ari Wandono

Publisher:

Gazi University

Main Topics:

Material Design and Behaviors | Composite and Hybrid Materials

Journal:

Gazi University Journal of Science Vol.38 Issue 2, pp.937-957

Document Type:

Article

Publication Date:

1/2025

Document Language:

English

Document ID (Org No.):

2001348413

pISSN:

2147-1762