Charpy Impact Response of the Cracked Aluminum Plates Repaired with FML Patches using the Response Surface Methodology

  • Faramarz Ashenai Ghasemi Department of Mechanical Engineering, Shahid Rajaee Teacher Training University, Tehran http://orcid.org/0000-0002-4693-4373
  • Lotfali Mozaffari Vanani Department of Mechanical Engineering, Shahid Rajaee Teacher Training University, Tehran
  • Ali Pourkamali Anaraki Department of Mechanical Engineering, Shahid Rajaee Teacher Training University, Tehran
  • Sadigh Raissi Department of Industrial Engineering, Islamic Azad University, Tehran
Keywords: Cracked aluminum plate, Charpy impact test, FML patch, response surface methodology

Abstract

Here, the effect of fiber metal laminate (FMLs) patches was studied for repairing of single-sided cracked aluminum plates experimentally to see their response to Charpy impact tests. The main desired parameters were composite patch lay-up, crack length, and crack angle each one in three levels. All experimental attempts generated and followed based on the design of experiments method by using of response surface methodology. The predicted energy absorption values obtained from the model were in good agreement with the experimental results. No matter the specimens were repaired or not, as the crack length was increased the energy absorption of the structure was decreased. The experimental results also showed that for lengthen cracks, increasing of the crack angle had more effect on energy absorption. Also it was observed that the patch lay-up effective on the impact response of the specimens. The more the metal layer was departed from the aluminum plate and the FML patches interfacial surface, the less energy was absorbed in the structure.

Author Biographies

Faramarz Ashenai Ghasemi, Department of Mechanical Engineering, Shahid Rajaee Teacher Training University, Tehran

Dr Faramarz Ashenai Ghasemi obtained his PhD (Mechanical Engineering-Design of Solids) from KNTU, Tehran, Iran. Presently he is working as an associate professor at Shahid Rajaee Teacher Training University (SRTTU), Tehran, Iran. His research interests include: Composite materials, impact mechanics, nano-composites, and mechanical behaviour of materials.

Lotfali Mozaffari Vanani, Department of Mechanical Engineering, Shahid Rajaee Teacher Training University, Tehran
Mr Lotfali Mozaffari Vanani obtained his MS (Mechanical Engineering-Applied Design) from Shahid Rajaee Teacher Training University (SRTTU), Tehran, Iran. Presently he is working as a teacher in technical high schools in Iran. His research interests include: composite materials, fracture mechanics, and repairing of composite materials.
Ali Pourkamali Anaraki, Department of Mechanical Engineering, Shahid Rajaee Teacher Training University, Tehran

Dr Ali Pourkamali Anaraki obtained his PhD (Mechanical Engineering-Applied Design) from Tarbiat Modares University, Tehran, Iran. Presently he is working as an associate professor at Shahid Rajaee Teacher Training University (SRTTU), Tehran, Iran. His research interests include: fracture mechanics, porous materials, fatigue, and simulation.

Sadigh Raissi, Department of Industrial Engineering, Islamic Azad University, Tehran

Dr Sadigh Raissi obtained his PhD (Industrial Engineering) from Islamic Azad University (IAU), Tehran, Iran. Presently he is working as an associate professor at School of Industrial Engineering in Islamic Azad University, Tehran South Branch (IAU-STB), Tehran, Iran. His research interests include: reliability engineering, statistical quality control, statistical process control, and computer simulation.

Published
2016-09-30
How to Cite
Ashenai Ghasemi, F., Mozaffari Vanani, L., Pourkamali Anaraki, A., & Raissi, S. (2016). Charpy Impact Response of the Cracked Aluminum Plates Repaired with FML Patches using the Response Surface Methodology. Defence Science Journal, 66(5), 536-545. https://doi.org/10.14429/dsj.66.9658
Section
Materials Science & Metallurgy