Loading...

Effect of Ultrasonic Assisted Machining on Mechanical Properties of Carbon Fiber Composite Laminates

Soltanzadeh, Tohid |

643 Viewed
  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 45163 (08)
  4. University: Sharif University of Technology
  5. Department: Mechanical Engineering
  6. Advisor(s): Akbari, Javad
  7. Abstract:
  8. Ultrasonically assisted machining process has been introduced as an effective solution to improve machining quality of mechanical parts. This study aims to reduce the drilling induced delamination to increase mechanical properties of CFRP laminates. Delamination decreases the strength of laminates under static and dynamic loads. Drilling parameters (feed and spindle speed) and ultrasonic vibrations amplitude are chosen as design experiment factors. Taguchi design of experiments method is used to study the effect of input factors on drilling thrust force, delamination factor and residual strength of drilled laminates. Input factors are in three levels and Taguchi L9 array is utilized. To obtain residual strength data Compression after Impact test is designed. Results show that increasing feed rate results in larger delamination factor. And ultrasonically assisted drilling method reduces the delamination. Comparing delamination factor data and residual strength shows the fact that larger delamination factor results in lower fracture stress
  9. Keywords:
  10. Lamination ; Glass Fiber Reinfoced Polymer (GFRP) ; Ultrasonic Assisted Deep Drilling ; Residual Strength ; Compression After Impact (CAI)Test

 Digital Object List

 Bookmark

No TOC