Impact damage and residual tensile strength of a CF-SMC composite

Keiji Ogi; Jang Woo Kim; Kousei Ono; Nobuhide Uda

doi:10.1080/09243046.2013.764779

Impact damage and residual tensile strength of a CF-SMC composite

Keiji Ogi, Jang Woo Kim, Kousei Ono, Nobuhide Uda

Aerospace Structures and Structural Dynamics Laboratory

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

In this study, the impact damage and the tension after impact (TAI) strength of a carbon-fiber-reinforced sheet molding compound (CF-SMC) are analyzed. First, low-velocity impact damage is introduced to several CF-SMC coupon specimens for a variety of impact energies. Next, the impact damage is observed by ultrasonic inspection and optical microscopy to determine the damage state and quantify the damage area and depth. Then, the TAI strength is measured and correlated with such parameters as maximum impact load, impact energy, and damage area and depth. Finally, a simple fracture-mechanics model for predicting the TAI strength is proposed. It is proved that the TAI strength depends on the impact damage depth.

Original language	English
Pages (from-to)	29-47
Number of pages	19
Journal	Advanced Composite Materials
Volume	22
Issue number	1
DOIs	https://doi.org/10.1080/09243046.2013.764779
Publication status	Published - May 28 2013

All Science Journal Classification (ASJC) codes

Ceramics and Composites
Mechanics of Materials
Mechanical Engineering

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title = "Impact damage and residual tensile strength of a CF-SMC composite",

abstract = "In this study, the impact damage and the tension after impact (TAI) strength of a carbon-fiber-reinforced sheet molding compound (CF-SMC) are analyzed. First, low-velocity impact damage is introduced to several CF-SMC coupon specimens for a variety of impact energies. Next, the impact damage is observed by ultrasonic inspection and optical microscopy to determine the damage state and quantify the damage area and depth. Then, the TAI strength is measured and correlated with such parameters as maximum impact load, impact energy, and damage area and depth. Finally, a simple fracture-mechanics model for predicting the TAI strength is proposed. It is proved that the TAI strength depends on the impact damage depth.",

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AU - Ogi, Keiji

AU - Kim, Jang Woo

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AU - Uda, Nobuhide

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N2 - In this study, the impact damage and the tension after impact (TAI) strength of a carbon-fiber-reinforced sheet molding compound (CF-SMC) are analyzed. First, low-velocity impact damage is introduced to several CF-SMC coupon specimens for a variety of impact energies. Next, the impact damage is observed by ultrasonic inspection and optical microscopy to determine the damage state and quantify the damage area and depth. Then, the TAI strength is measured and correlated with such parameters as maximum impact load, impact energy, and damage area and depth. Finally, a simple fracture-mechanics model for predicting the TAI strength is proposed. It is proved that the TAI strength depends on the impact damage depth.

AB - In this study, the impact damage and the tension after impact (TAI) strength of a carbon-fiber-reinforced sheet molding compound (CF-SMC) are analyzed. First, low-velocity impact damage is introduced to several CF-SMC coupon specimens for a variety of impact energies. Next, the impact damage is observed by ultrasonic inspection and optical microscopy to determine the damage state and quantify the damage area and depth. Then, the TAI strength is measured and correlated with such parameters as maximum impact load, impact energy, and damage area and depth. Finally, a simple fracture-mechanics model for predicting the TAI strength is proposed. It is proved that the TAI strength depends on the impact damage depth.

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