SAMPE Journal - September/October 2020 - 6

FEATURE

Composite Bonded Joints
Interlocking Fiber Configuration Effect on Mode-I
Disbond Arresting in Composite Bonded Joints
Shinsaku Hisada1,2, Shu Minakuchi1 and Nobuo Takeda1,3
1

The University of Tokyo, Kashiwa, Chiba, Japan

2

Currently, Japan Aerospace Exploration Agency (JAXA), Mitaka, Tokyo, Japan
Currently, Japan Transport Safety Board (JTSB), Yotsuya, Shinjuku, Tokyo, Japan

3

ABSTRACT

A

dhesively bonded joints have various advantages when compared with bolted joints. However, bonded
joints are not reliable enough to be applied to primary aircraft structures. Therefore, airframes are

assembled by using hundreds of thousands of bolts despite the significant potential of bonded joints. New
disbond arrest features that can limit disbond to an uncritical size are one of the key elements to achieve
certified bonded aircraft structures. Although various design features have been proposed already, they are
not satisfactory in respect of their stiffness and initial failure strength. In this paper, an interlocking fiber
feature is introduced in bonded joints, and its configuration effect on mode-I disbond arresting is evaluated.
Three types of arrester configurations with various fiber volumes are compared in terms of their mechanical
performance and failure pattern in double cantilever beam tests. Finite element analysis is also performed to
clarify the crack-arresting mechanism of each configuration.

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SAMPE Journal - September/October 2020

Table of Contents for the Digital Edition of SAMPE Journal - September/October 2020

Table of contents
SAMPE Journal - September/October 2020 - Cover1
SAMPE Journal - September/October 2020 - Cover2
SAMPE Journal - September/October 2020 - Table of contents
SAMPE Journal - September/October 2020 - 2
SAMPE Journal - September/October 2020 - 3
SAMPE Journal - September/October 2020 - 4
SAMPE Journal - September/October 2020 - 5
SAMPE Journal - September/October 2020 - 6
SAMPE Journal - September/October 2020 - 7
SAMPE Journal - September/October 2020 - 8
SAMPE Journal - September/October 2020 - 9
SAMPE Journal - September/October 2020 - 10
SAMPE Journal - September/October 2020 - 11
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SAMPE Journal - September/October 2020 - Cover3
SAMPE Journal - September/October 2020 - Cover4
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