Process monitoring of glass reinforced polypropylene laminates using fiber Bragg gratings

被引：58

作者：

Mulle, M. ^{[1
]}

Wafai, H. ^{[1
]}

Yudhanto, A. ^{[1
]}

Lubineau, G. ^{[1
]}

Yaldiz, R. ^{[2
]}

Schijve, W. ^{[2
]}

Verghese, N. ^{[2
]}

机构：

[1] KAUST, Phys Sci & Engn, COHMAS Lab, Thuwal 239556900, Saudi Arabia

[2] SABIC, POB 319, NL-6160 AH Geleen, Netherlands

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2016年 / 123卷

关键词：

Multifonctionnal composites; Process monitoring; Residual stress/strain; thermomechanical properties; Fiber optic sensing; Hot-press molding; RESIDUAL-STRESSES; THERMOPLASTIC COMPOSITES; FIELD-MEASUREMENTS; SENSORS; MANUFACTURE;

D O I：

10.1016/j.compscitech.2015.12.020

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Hot-press molding of glass-fiber-reinforced polypropylene (GFPP) laminates was monitored using longitudinally and transversely embedded fiber Bragg gratings (FBGs) at different locations in unidirectional laminates. The optical sensors proved to efficiently characterize some material properties; for example, strain variations could be related physical change of the laminate, revealing key transition points such as the onset of melt or solidification. These results were confirmed through some comparison with traditional techniques such as differential scanning calorimetry. After the GFPP plate was released from the mold, residual strains were estimated. Because cooling rate is an important process parameter in thermoplastics, affecting crystallinity and ultimately residual strain, two different conditions (22 and 3 degrees C/min) were investigated. In the longitudinal direction, results were nearly identical while in the transverse direction results showed a 20% discrepancy. Coefficients of thermal expansion (CTE) were also identified during a post-process heating procedure using the embedded FBGs and compared to the results of a thermo-mechanical analysis. Again, dissimilarities were observed for the transverse direction. With regards to through the thickness properties, no differences were observed for residual strains or for CTEs. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：143 / 150

页数：8

共 23 条

[1] THE FORMATION OF RESIDUAL-STRESSES IN LAMINATED THERMOPLASTIC COMPOSITES [J].

BARNES, JA ;

BYERLY, GE .

COMPOSITES SCIENCE AND TECHNOLOGY, 1994, 51 (04) :479-494

[2]

Cantwell W.J., 2002, POLYM COMPOS, V23

[3]

Denault J., 1998, POLM COMPOS, V19

[4]

Guillem J.F., 2002, POLYM COMPOS, V23

[5] Structural integrity analysis of embedded optical fibres in composite structures [J].

Hadzic, R ;

John, S ;

Herszberg, I .

COMPOSITE STRUCTURES, 1999, 47 (1-4) :759-765

[6] Fiber Bragg grating technology fundamentals and overview [J].

Hill, KO ;

Meltz, G .

JOURNAL OF LIGHTWAVE TECHNOLOGY, 1997, 15 (08) :1263-1276

[7] Process monitoring of aluminum-foam sandwich structures based on thermoplastic fibre-metal laminates using fibre Bragg gratings [J].

Kuang, KSC ;

Zhang, L ;

Cantwell, WJ ;

Bennion, I .

COMPOSITES SCIENCE AND TECHNOLOGY, 2005, 65 (3-4) :669-676

[8] Embedded fibre Bragg grating sensors in advanced composite materials [J].

Kuang, KSC ;

Kenny, R ;

Whelan, MP ;

Cantwell, WJ ;

Chalker, PR .

COMPOSITES SCIENCE AND TECHNOLOGY, 2001, 61 (10) :1379-1387

[9]

Levin K, 2002, EUR WORKSH SHM PAR F, P530

[10] Estimation of residual stresses in laminated composites using field measurements on a cracked sample [J].

Lubineau, Gilles .

COMPOSITES SCIENCE AND TECHNOLOGY, 2008, 68 (13) :2761-2769

← 1 2 3 →