Effect of gamma radiation on compressive properties of Kevlar/oil palm empty fruit bunch hybrid composites

Siti Madiha Muhammad Amir, Mohamed Thariq Hameed Sultan, Mohammad Jawaid, Ahmad Hamdan Ariffin, Mohamad Ridzwan Ishak, Mohd ReusmazzranYusof, Shukri Mohd, Khairul Anuar Mohd Salleh

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


The compressive strength of irradiated hybrid composite materials was investigated via compression testing. The hybrid composites consisted of Kevlar fibre, oil palm empty fruit bunch (EFB) fibre, and epoxy. The hand lay-up method was used to fabricate the samples. The samples were then irradiated with different gamma radiation doses: 25 kGy, 50 kGy, and 150 kGy. Compression tests were performed in accordance with ASTM D695 (2015). Compressive strength in Group 1 increased to 30.4 MPa at 25 kGy. At 50 kGy, the compressive strength further increased to 39.6 MPa. Compressive strength for Group 2 also increased to 58.7 MPa when the radiation increased to 50 kGy. The compressive modulus showed the same trend in compressive strength for both Group 1 and Group 2. It was observed that the exposure of hybrid Kevlar/oil palm EFB/epoxy hybrid composites improved the compressive properties of the materials. Furthermore, a difference in the thickness and layering pattern also influenced the compressive strength with different doses. At 150 kGy, both layering patterns showed a degradation of compressive properties.

Original languageEnglish
Pages (from-to)7628-7639
Number of pages12
Issue number4
Publication statusPublished - 2018
Externally publishedYes


  • Compressive strength
  • Gamma radiation
  • Hybrid composites

ASJC Scopus subject areas

  • Environmental Engineering
  • Bioengineering
  • Waste Management and Disposal


Dive into the research topics of 'Effect of gamma radiation on compressive properties of Kevlar/oil palm empty fruit bunch hybrid composites'. Together they form a unique fingerprint.

Cite this