# Curing residual strain monitoring of carbon fiber reinforced polymer composite using notched long-period fiber grating

> Title: Curing residual strain monitoring of carbon fiber reinforced polymer composite using notched long-period fiber grating Page Range: p.27-34 Author(s): Ke-Ping Ma; Chao-Wei Wu; Bo-Lan Fang; Chia-Chin Chiang File size: Download the pdf (subscribers only) Buy the pdf (non-subscribers) Journal: Polymers and...

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Published: 2018-01-01T00:00:00+00:00
Categories: Polymers and Polymer Composites

**Title: Curing residual strain monitoring of carbon fiber reinforced polymer composite using notched long-period fiber grating**
 Page Range: p.27-34
 Author(s): Ke-Ping Ma; Chao-Wei Wu; Bo-Lan Fang; Chia-Chin Chiang
 File size:
 ![](http://dload.gif) [Download the pdf](http://journals.asp?Page=111&JournalDownload=ON&JournalType=ppc&JournalIssue=ppc26-1&JournalID=103152&JIP=) (subscribers only)
 ![](http://handbuy.gif) Buy the pdf (non-subscribers)
 Journal: Polymers and Polymer Composites
 Issue Year: ppc
 Volume: 26
 Issue No: No.1

**Abstract**
 Composite materials are widely used in the aerospace industry and structural engineering owing to their advantageous mechanical properties. The curing monitoring of composite material is important to ensure the quality of the curing process, especially for the characterisation of residual strains after manufacturing. In this study, we present a notched long-period fibre grating (NLPFG) with a period of 650 mm and a diameter of 66 mm that can be used in the curing monitoring of composite materials. This NLPFG was embedded into the middle layers of composite materials in order to determine the curing residual stress exhibited by the materials. The experimental results showed that the residual stress was about 107 MPa and the axial residual strain was 1490 me. Therefore, the proposed NLPFG has potential as a strain sensor for composite materials. 17 refs.

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