Dynamic mechanical analysis of carbon/epoxy composites for structural pipeline repair

Abstract The viscoelastic behavior of a carbon fiber/epoxy matrix composite material system used for pipeline repair has been evaluated though dynamic mechanical analysis. The effects of the heating rate, frequency, and measurement method on the glass transition temperature ( T g ) were studied. The increase in T g with frequency was related to the activation energy of the glass transition relaxation. The activation energy can be used for prediction of long term performance. The measured tan delta peak T g ’s of room temperature cured and post-cured composite specimens ranged from 60 to 129 °C. Analysis of T g data at various cure states was used to determine use temperature limits for the composite repair system.

[1]  R. Gupta,et al.  Fundamentals of Polymer Engineering , 2018 .

[2]  P. Lee-Sullivan,et al.  Determination of Activation Energy for Glass Transition of an Epoxy Adhesive Using Dynamic Mechanical Analysis , 2000 .

[3]  David J. Williams,et al.  Polymer science and engineering , 1971 .

[4]  畠山 立子,et al.  Thermal Analysis: Fundamentals and Applications to Polymer Science , 1994 .

[5]  P. Lee-Sullivan,et al.  Moisture effects on FM300 structural film adhesive: Stress relaxation, fracture toughness, and dynamic mechanical analysis , 2005 .

[6]  Sarah M. Thomas.  Magnetic magic: detecting cracks using plastic film , 2002 .

[7]  J. Wolfrum,et al.  Dynamical Mechanical Thermoanalysis of High Performance Reinforced Materials Influences and Problems , 1999 .

[8]  Christopher R. Alexander.  DEVELOPMENT AND TESTING OF THE ARMOR PLATE PIPELINE REPAIR SYSTEM , 1998 .

[9]  A. López,et al.  Determination of the activation energies for α and β transitions of a system containing a diglycidyl ether of bisphenol a (DGEBA) and 1,3-bisaminomethylcyclohexane (1,3-BAC) , 1994 .

[10]  Michael R. Kessler,et al.  Evaluation of Carbon/Epoxy Composites for Structural Pipeline Repair , 2004 .

[11]  Michael R. Kessler,et al.  Creep behavior of carbon fiber/epoxy matrix composites , 2006 .

[12]  V. Karbhari,et al.  Multi-frequency dynamic mechanical thermal analysis of moisture uptake in E-glass/vinylester composites , 2004 .

[13]  A. G. Gibson,et al.  Refurbishment of steel tubular pipes using composite materials , 2000 .

[14]  K. Menard.  Dynamic Mechanical Analysis: A Practical Introduction , 1997 .

[15]  S. White,et al.  Characterization of the cure-state of DGEBA-DDS epoxy using ultrasonic, dynamic mechanical, and thermal probes , 2002 .

[16]  Masayuki Nakada,et al.  Accelerated Testing for Long-term Durability of FRP Laminates for Marine Use , 2005 .