5597629 High shear strength pultrusion

1998 ◽  
Vol 29 (3) ◽  
pp. 339-340
2016 ◽  
Vol 22 (2) ◽  
pp. 129
Author(s):  
Yudhi Arnandha ◽  
Iman Satyarno ◽  
Ali Awaludin ◽  
Arfiati Fardhani

Wood Plastic Composite (WPC) is wood based material that been produce by mixing sawdust as main composition and plastic polymer as bonding agent. Nowadays, WPC board already been produced in Indonesia using Sengon sawdust and recycle HDPE plastic. Sengon sawdust was used as WPC since its availability from plywood production waste, moreover HDPE plastic considered had higher strength and more rigid than PET plastic. WPC occasionally being used as non structural material, moreover from previous study about mechanical properties of WPC, it was found that WPC Sengon has high shear strength around 25 – 30 MPa. These lead that WPC Sengon had a potential used as shear wall sheathing, thus additional research need to be conducted in order to study the type of bolt and diameter of the bolt can be used for these shear wall. This study aimed to investigate the dowel bearing of bolt using full hole method based on ASTM D5764 with type and bolt diameter as specimen variation. Two types of bolt were used in this study; stainless bolt and standard bolt with diameter each of 6 mm, 8 mm, 10 mm and 12 mm. According to ANOVA, there was insignificant result between stainless bolt and standard one, but there was significant result based on diameter of the bolt. Hereafter, it can be recommended the used of 10 mm diameter of bolt for structural purpose with dowel bearing strength around 67 – 70 MPa.


RSC Advances ◽  
2016 ◽  
Vol 6 (94) ◽  
pp. 91783-91790 ◽  
Author(s):  
Yanhong Tian ◽  
Zhi Jiang ◽  
Chenxi Wang ◽  
Su Ding ◽  
Jiayue Wen ◽  
...  

Cu–Ag core–shell nanoparticles owned good anti-oxidation ability, and as-fabricated joints using the Cu–Ag core–shell nanoparticles paste showed high shear strength.


2012 ◽  
Vol 710 ◽  
pp. 180-185 ◽  
Author(s):  
Niraj Nayan ◽  
S.V.S. Narayana Murty ◽  
Alok Agarwal ◽  
S.C. Sharma ◽  
P.P. Sinha

Al-Cu-Mg (Russian grade V65) alloys are used for riveting applications in aerospace industries due to their relatively high shear strength of the order of 25 kg/mm2 combined with a high plasticity. This paper presents the processing of V65 aluminium alloy rivets from wire rods. It was observed that wire rods which have not been intermittently annealed and having more than 25% cold working prior to heading operation, cracked on the free bulged surface of the head. In view of this, it is recommended that a maximum of 25% of cold work is allowed in the wire rods to be used for rivet fabrication to successfully realize defect free rivets.


2012 ◽  
Vol 84 (12) ◽  
pp. 2559-2568 ◽  
Author(s):  
Siqian Wang ◽  
Daisaku Kaneko ◽  
Kai Kan ◽  
Xin Jin ◽  
Tatsuo Kaneko

A novel thermotropic liquid-crystalline (LC) biocopolymer, poly{trans-3-methoxyl-4-hydroxycinnamic acid (MHCA: ferulic acid)-co-trans-3,4-dihydroxycinnamic acid (DHCA: caffeic acid)}, was synthesized by a thermal acidolysis-polycondensation of MHCA and DHCA, efficiently catalyzed by Na2HPO4. When the MHCA composition of poly(MHCA-co-DHCA) was 60, 75, and 90 mol %, the copolymers showed a nematic LC phase although individual homopolymers such as polyMHCA and polyDHCA did not exhibit LC phase. Poly(MHCA-co-DHCA)s showed high molecular weight (Mw) ranged between Mn 2.6 × 104 to 3.7 × 104 and Mw 8.2 × 104 to 13.1 × 104, respectively, high glass-transition temperature (Tg) with the range of 115 to 140 °C and high degradation temperature T10, from 315 to 356 °C. In the adhesive test of copolymers against the surface of carbon substrate, the copolymers showed high shear strength at fracture.


2008 ◽  
Vol 109 (4) ◽  
pp. 2434-2441 ◽  
Author(s):  
Yang Zhang ◽  
Bo You ◽  
Huang Huang ◽  
Shuxue Zhou ◽  
Limin Wu ◽  
...  

2005 ◽  
Vol 488-489 ◽  
pp. 227-230 ◽  
Author(s):  
Yan Dong Yu ◽  
Qiang Li

In this paper, diffusion bonding of ZK60 superplastic material is investigated according to atom diffusion law. Gleeble-1500 testing machine is used in the diffusion bonding processing on the superplastic ZK60. In additional, shear tests of bonding joints are carried out on electronic universal testing machine. The optimized diffusion bonding conditions are obtained: a bonding time of 90 min at 653K at a pressure of 20MPa. The microstructures of the joints are observed through OM and SEM. It is concluded that the mechanism of diffusion bonding of the ZK60 superplastic material is the slide of original grain boundaries caused by atom diffusion and the grain growth, and sound joints with high shear strength are obtained through sufficient diffusion of the interface atoms.


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