Composite Materials Laboratory

K. Takemura

Kenichi Takemura

Office: 12-37 Ext.: 3488


03/1994, Ph.D. (Engineering),

Doshisha University

H. Katogi

Hideaki Katogi
(Assistant Professor)

Laboratory: 12-27 Ext.: 3474


03/2015, Ph.D. (Engineering),

Shizuoka University

Research Field

Strength of Materials, Composite Materials, Fracture Mechanics.

Research Overview

Investigation of strength, fracture toughness, fatigue, creep, and molding methods for composites.

Research Subjects

  • 1. Creep properties of carbon fiber reinforced plastics.
  • 2. Interfacial properties at fiber/resin interfaces in composites.
  • 3. Creep properties of green composites containing natural fibers.
  • 4. Interfacial and fatigue properties of green composite containing natural fibers.


Fiber-reinforced plastics (FRPs) are usually an epoxy resin or thermoplastic resin reinforced with glass fiber, carbon fiber, or natural fibers. So, FRPs have the excellent mechanical properties of their components.

Carbon Fiber-reinforced Plastic (CFRP)

CFRP is used for airplane parts because it has high specific strength and high specific stiffness. We investigate the interlaminar fracture toughness and creep property of CFRP, and we design and manufacture CFRP joint parts for electronic vehicles by using the finite element method.

Natural Fiber-reinforced Plastic (NFRP)

NFRPs, which consist of natural fibers in thermoplastic resin, are alternative materials to glass fiber-reinforced plastic. In Europe, hemp fiber is mainly used for buildings and automobile parts. However, we examine the mechanical properties of NFRPs containing jute, kenaf, and bamboo fibers.

Green Composites

Green composites are NFRPs made from a biodegradable thermoplastic resin like PLA that address the problem of plastic waste. We examine the mechanical and biodegradable properties of green composites.

  • 1) N. Iijima, H. Katogi and K. Takemura, “Effect of thermal cycling after water absorption on flexural property of CFRP,” Advanced Materials Research, vol. 1110, pp. 19‒22 (2015)
  • 2) H. Katogi and K. Takemura, “The effect of soil on the biodegradable behavior of green composites under various environmental (ambient) temperature,” WIT Transactions on Engineering Sciences, vol.90, pp.47‒55 (2015).
  • 3) K. Takemura, S. Miyamoto, and H. Katogi, “Effect of surface treatment on creep property of jute fiber reinforced green composite under environmental temperature,” Key Engineering Materials, vols. 525‒526, pp.53‒56 (2015).
  • 4) H. Katogi, and K. Takemura, “The mode I interlaminar fracture toughness of carbon fiber/epoxy resin composite with freezing after water absorption,” WIT Transactions on the Built Environment, vol. 137, pp. 327‒334 (2014).
Affiliated Academic Organizations

K. Takemura:
The Japan Society of Mechanical Engineers, The Society of Materials Science, Japan, Japan Society for Composite Materials.

H. Katogi:
The Japan Society of Mechanical Engineers, The Society of Materials Science, Japan, Japan Society for Composite Materials, The Society of Fiber Science and Technology, Japan, Materials Life Society, Japan.

Current members
◯ Professors: 1 ◯ Assistant Professors: 1 ◯ Postgraduates: 3
◯ Undergraduates: 12

Facilities: Universal tensile tester (Shimadzu and A&D). fatigue tester, micro fatigue tester, creep tester, heat press machine, and milling machine.