Experimental study on aluminium based sandwich composite with polypropylene foam sheet

2020 ◽  
Vol 24 ◽  
pp. 746-753
Author(s):  
A.R. Sivaram ◽  
N. Manikandan ◽  
S.K. Krishnakumar ◽  
R. Rajavel ◽  
S. Krishnamohan ◽  
...  
1994 ◽  
Vol 3 (3) ◽  
pp. 096369359400300
Author(s):  
S. Ramakrishna ◽  
H. Hamada ◽  
H. Naito

In this experimental study, the tensile behaviour of bolted joints of pultruded glass fibre reinforced polyester sandwich composites was investigated. The transverse specimens cut normal to the pultrusion direction failed by net-tension whereas the longitudinal specimens cut parallel to the pultrusion direction failed by a combination of bearing and shear-out modes. The joint strength was dependent on the specimen geometry in the case of transverse specimens whereas it was not in the case of longitudinal specimens.


2020 ◽  
Vol 34 (07n09) ◽  
pp. 2040033 ◽  
Author(s):  
Sunghoon Kim ◽  
Jongrok Ha ◽  
Seongwon Yoon ◽  
Myunghyun Kim

In this paper, an experimental study was conducted to determine the efficiency of repair methods for sandwich composites used as hull materials in leisure ships. The method was applied to external, scarf, and step patch repairs using an epoxy bond. The load was described in terms of the hogging and sagging moments applied to the hull by waves. Static and fatigue tests were performed to derive the recovery rate of repaired specimens. The experimental results indicated that the recovery rate of specimens with the scarf patch was the highest at 91.80% when the hogging moment was applied. However, the difference in the recovery rate between hogging and sagging moments was the lowest for specimens with the step patch, and the recovery rate was high at 89.96% and 85.15%, respectively.


2014 ◽  
Vol 13 (2) ◽  
pp. 183-190
Author(s):  
Jacek Chróścielewski ◽  
Marian Klasztorny ◽  
Mikołaj Miśkiewicz ◽  
Łukasz Pyrzowski ◽  
Magdalena Rucka ◽  
...  

The paper presents experimental study of sandwich composite used for an innovative foot-and-cycle bridge. The footbridge has a U-shaped shell structure made of sandwich consisting GFRP laminate covers and foam PET core. The bridge is manufactured using the infusion technology. Results of one and two directional tension tests of the laminates, compression tests of PET foam samples and 3-point as well as 4-point bending tests of sandwich beams are presented.


Coatings ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 750
Author(s):  
Pavel Koštial ◽  
Zora Koštialová Jančíková ◽  
Ivan Ružiak ◽  
Milada Gajtanska

Modern means of transport increasingly utilize sandwich constructions. Among other things, the reasons for such state of affairs include the reduced weight of means of transport, and through this, better fuel economy as well as price. This work is dedicated to a systematic experimental study of the influence of various materials and sandwich designs on their mechanical properties. In the framework of experiments, sandwich-structured composites were exposed to two types of stressing: static as well as impact stressing. The testing of prepared samples was performed according to ASTM C-393 Standard, dealing specifically with the bending behavior of sandwich composite constructions and impact testing under the scope of ISO 6603-2 Standard test. In this article we deal with static and impact testing of the eight types of core materials, two types of coatings, two types of surface finishes, and two types of resins with a special emphasis on their use in constructions of some exterior or interior components of transport means.


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