Investigation of the temperature dependent impact behaviour of pin reinforced foam core sandwich structures

被引：8

作者：

Dimassi, M. Adli ^{[1
]}

John, Marianne ^{[2
]}

Herrmann, Axel S. ^{[1
]}

机构：

[1] Faserinst Bremen eV, Bremen, Germany

[2] Fraunhofer Inst Microstruct Mat & Syst IMWS, Halle, Germany

来源：

COMPOSITE STRUCTURES | 2018年 / 202卷

关键词：

Tied foam core; 3-Dimensional pin reinforcement; Low-velocity impact; Foam core sandwich structure;

D O I：

10.1016/j.compstruct.2018.04.012

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Dry carbon and glass fibre bundles were inserted into a ROHACELL (R) 71HERO Polymethacrylimide (PMI) foam core under a specific inclination angle and pin pattern in order to improve the impact damage tolerance and the fracture toughness of foam core sandwich. Impact tests were performed on pin-reinforced foam core sandwich panels with different pin-configurations at impact energies between 35 J and 70 J. X-ray computed tomography and ultrasonic C-scan were used to determine the damages in the foam core. At room temperature no cracks were observed in the foam core. Using carbon fibre pins led to the creation of thermally induced cracks in the foam core after impacts at -55 degrees C, which is critical for the integrity of the structure. The modification of the manufacturing process parameters and the use of glass fibre pins are two solutions to improve the impact behaviour at -55 degrees C by delaying the thermal cracks to higher impact energies.

引用

页码：774 / 782

页数：9

共 27 条

[1] [Anonymous], 2014, PRODUCT INFORM ROHAC
[2] Improved impact performance of marine sandwich panels using through-thickness reinforcement: Experimental results
Baral, N.
Cartie, D. D. R.
Partridge, I. K.
Baley, C.
Davies, P.
[J]. COMPOSITES PART B-ENGINEERING, 2010, 41 (02) : 117 - 123
[3] Carstensen T, 2001, INT SAMPE TECH CONF, V33, P452
[4] Dimassi M. A., 2016, P 18 CHEMN SEM MAT E
[5] Dimassi M. A., 2016, P 17 EUR C COMP MAT
[6] Endres G, 2014, TIED FOAM CORE TECHN
[7] Fasanella EL, 2004, P AM HEL SOC 60 ANN, P8
[8] Frederick G, 1995, 950549 SAE
[9] Han F, 2016, POLYM COMPOS
[10] Sandwich structures technology in commercial aviation - Present applications and future trends
Herrmann, AS
Zahlen, PC
Zuardy, I
[J]. SANDWICH STRUCTURES7: ADVANCING WITH SANDWICH STRUCTURES AND MATERIALS, 2005, : 13 - 26

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