Features of Application of Modern Wooden Structure into Reconstruction in Wenchuan-Earthquake Region

2011 ◽  
Vol 368-373 ◽  
pp. 3769-3772
Author(s):  
Yong Cao
Keyword(s):  
Low Cost ◽  
High Strength ◽  
Light Weight ◽  
Wood Industry ◽  
Urban Architecture ◽  
Wooden Structure ◽  
Rapid Construction ◽  
Rural Buildings ◽  
Post Disaster ◽  
Important Milestone

The 8-magnitude earthquake stuck the Wenchuan region of Sichuan Province on May 12, 2008. It resulted in heavy collapses and damage of buildings, then caused a great deal of injuries and loses in life and wealth. In the post-disaster reconstruction, several new structure systems with good seismic-resistant performance, especially modern timber structure, were adopted and promoted by local government. Its features of light weight, rapid construction, high strength and energy saving, can be shown in a serial of experiment reconstruction such as school building, nursing home for elderly, rural housing and so on. The application of modern timber architecture in Wenchuan region shows some new trends in China: Sharp increase in amount and scale, complete variety of modern wooden structure in use, covering urban architecture and rural buildings, cost control in construction and low-cost wooden housing, training in local builders and improvement of local wood industry, lastly, and flourishing subsequent study on wooden architecture and structure. It can be taken as the important milestone in development of modern timber architecture in China.

scholarly journals Assessment of Mechanical Properties of Biocomposite Material by using Sawdust and Rice Husk

2019 ◽  
Vol 11 (3) ◽  
pp. 147-156
Author(s):  
Prabhat SINGH ◽  
Bhagel SINGH
Keyword(s):  
Rice Husk ◽  
Low Cost ◽  
Glass Fibers ◽  
Testing Machine ◽  
Weight Ratio ◽  
High Strength ◽  
Light Weight ◽  
Universal Testing ◽  
Biocomposite Material ◽  
Main Factor

This paper presents an experimental study on the development of biocomposite material by using sawdust (SD) and rice husk (RH). The use of composite in the present production has increased dramatically since the 1970’s. Traditional material like aluminum, steel, iron and copper etc. may be easily replaced by using this classical biocomposites. The tensile test, hardness and tear resistance test were conducted in a Universal testing machine as per ASTM D638, ASTM D2240 and ASTM D1004 standard, respectively. Although commercial industries have increasingly been concerned with the low cost, light weight and eco-friendly material, the biocomposite material has also a great potential for reduced production cost and low maintenance which have proven to be a main factor in a push towards recycled biocomposites. In this paper we have fabricated a biocomposite model from materials like sawdust, rice husk. The main reason to use biocomposites is that they are more economical and have high strength to weight ratio compared to glass fibers. Hence fabricated material can be used for various applications.

Study on Production Technology of Paper Wooden Compound Pallets

2013 ◽  
Vol 690-693 ◽  
pp. 1057-1060
Author(s):  
Jian Hai Guo ◽  
Jun Yan Huang ◽  
Xin Sun ◽  
Shuang Ling Wu ◽  
Jie Ma
Keyword(s):  
Flat Plate ◽  
Environmental Protection ◽  
Production Technology ◽  
Raw Materials ◽  
Low Cost ◽  
High Strength ◽  
Packaging Materials ◽  
Light Weight ◽  
Particle Board ◽  
New Type

The paper wooden compound pallets are produced through the processing and assembly by using particle board, paper tubes and PE coated paper board as raw materials. Comparing with traditional wooden flat plate, the new type of green environmental protection pallets has many advantages such as high strength, light weight, low cost, waterproof, anti-moth-eaten, no need fumigation, etc. is an ideal green transport packaging materials for export commodities. The paper discusses and probes into the process and technology of paper wooden compound pallets.

Analysis on Fiber Laser Welding of MS1470 Steel

2011 ◽  
Vol 328-330 ◽  
pp. 487-491
Author(s):  
Ya Jie Li ◽  
Li Jun Xin ◽  
Zhi Yong Wang
Keyword(s):  
Automotive Industry ◽  
Low Cost ◽  
Welding Process ◽  
High Strength ◽  
Fracture Morphology ◽  
Rolling Process ◽  
Light Weight ◽  
Lower Intensity ◽  
Fiber Laser Welding ◽  
Fracture Failure

MS1470 steel is mainly used in the automotive industry, which has high strength, light weight and low cost. However, there always appear grains coarsening, brittle increasing, lower intensity and other issues. To solve this problem, we have analyzed the welding process, the fracture morphology and microstructure etc. The results shown that the microstructure were mainly ferrites and lath martensites. However, grains coarsening in the HAZ were serious, and fracture failure also occurred in the heat affected zone. Meanwhile, MS1470 steel had formed a small amount of pores during rolling process, which also is an important reason for cracks formation.

Decomposition of the metastable beta titanium alloy Ti-15-3

1983 ◽  
Vol 41 ◽  
pp. 264-265
Author(s):  
Y. L. Chen ◽  
S. Fujlshiro
Keyword(s):  
Low Cost ◽  
High Strength ◽  
Alpha Phase ◽  
Thick Sheet ◽  
Omega Phase ◽  
Beta Titanium Alloy ◽  
Beta Titanium ◽  
Beta Matrix ◽  
Metastable Beta ◽  
Very High

Metastable beta titanium alloys have been known to have numerous advantages such as cold formability, high strength, good fracture resistance, deep hardenability, and cost effectiveness. Very high strength is obtainable by precipitation of the hexagonal alpha phase in a bcc beta matrix in these alloys. Precipitation hardening in the metastable beta alloys may also result from the formation of transition phases such as omega phase. Ti-15-3 (Ti-15V- 3Cr-3Al-3Sn) has been developed recently by TIMET and USAF for low cost sheet metal applications. The purpose of the present study was to examine the aging characteristics in this alloy.The composition of the as-received material is: 14.7 V, 3.14 Cr, 3.05 Al, 2.26 Sn, and 0.145 Fe. The beta transus temperature as determined by optical metallographic method was about 770°C. Specimen coupons were prepared from a mill-annealed 1.2 mm thick sheet, and solution treated at 827°C for 2 hr in argon, then water quenched. Aging was also done in argon at temperatures ranging from 316 to 616°C for various times.

Microstructure of an extruded rapidly solidified Al-8Fe-2Mo alloy

1986 ◽  
Vol 44 ◽  
pp. 548-549
Author(s):  
W. T. Donlon ◽  
J. E. Allison ◽  
S. Shinozaki
Keyword(s):  
Electron Microscopy ◽  
Automotive Industry ◽  
Fuel Economy ◽  
High Strength ◽  
Al Alloys ◽  
Light Weight ◽  
Thin Sections ◽  
Strength And Durability ◽  
Rapidly Solidified ◽  
Whitney Aircraft

Light weight materials which possess high strength and durability are being utilized by the automotive industry to increase fuel economy. Rapidly solidified (RS) Al alloys are currently being extensively studied for this purpose. In this investigation the microstructure of an extruded Al-8Fe-2Mo alloy, produced by Pratt & Whitney Aircraft, Goverment Products Div. was examined in a JE0L 2000FX AEM. Both electropolished thin sections, and extraction replicas were examined to characterize this material. The consolidation procedure for producing this material included a 9:1 extrusion at 340°C followed by a 16:1 extrusion at 400°C, utilizing RS powders which have also been characterized utilizing electron microscopy.

INCONEL ALLOY X-750

Alloy Digest ◽  
1966 ◽  
Vol 15 (7) ◽  
Keyword(s):  
Gas Turbines ◽  
Rupture Strength ◽  
Low Cost ◽  
High Strength ◽  
Heat Treating ◽  
Chromium Alloy ◽  
Cryogenic Temperatures ◽  
Inconel Alloy ◽  
Nickel Chromium ◽  
Corrosion And Oxidation

Abstract INCONEL alloy X-750 is an age-hardenable, nickel-chromium alloy used for its corrosion and oxidation resistance and high creep rupture strength at temperature up to 1500 F. It also has excellent properties at cryogenic temperatures. It was originally developed for use in gas turbines, but because of its low cost, high strength and weldability it has become the standards choice for a wide variety of applications. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as creep and fatigue. It also includes information on forming, heat treating, machining, joining, and surface treatment. Filing Code: Ni-115. Producer or source: Huntington Alloy Products Division, An INCO Company.

FEDERATED F150.5

Alloy Digest ◽  
1975 ◽  
Vol 24 (11) ◽  
Keyword(s):  
Fracture Toughness ◽  
Aluminum Alloy ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
High Strength ◽  
Heat Treating ◽  
Alloying Elements ◽  
Light Weight ◽  
Temperature Performance

Abstract FEDERATED F150.5 is a heat-treatable aluminum alloy containing silicon and copper as the major alloying elements. It is recommended for high-strength, light-weight, pressure-tight castings. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance as well as casting, heat treating, machining, and joining. Filing Code: Al-219. Producer or source: Federated Metals Corporation, ASARCO Inc..

Bamboo Waste-based Bio-composite Substance: An application for Low-cost Construction Materials

2020 ◽  
Vol 4 (1) ◽  
pp. 41-48
Author(s):  
Teodoro Astorga Amatosa ◽  
Michael E. Loretero
Keyword(s):  
Composite Materials ◽  
Sea Water ◽  
Raw Materials ◽  
Low Cost ◽  
Construction Materials ◽  
Single Layer ◽  
High Strength ◽  
Green Technology ◽  
Experimental Medium ◽  
Natural Treatment

Bamboo is a lightweight and high-strength raw materials that encouraged researchers to investigate and explore, especially in the field of biocomposite and declared as one of the green-technology on the environment as fully accountable as eco-products. This research was to assess the technical feasibility of making single-layer experimental Medium-Density Particleboard panels from the bamboo waste of a three-year-old (Dendrocalamus asper). Waste materials were performed to produce composite materials using epoxy resin (C21H25C105) from a natural treatment by soaking with an average of pH 7.6 level of sea-water. Three different types of MDP produced, i.e., bamboo waste strip MDP (SMDP), bamboo waste chips MDP (CMDP) and bamboo waste mixed strip-chips MDP (MMDP) by following the same process. The experimental panels tested for their physical-mechanical properties according to the procedures defined by ASTM D1037-12. Conclusively, even the present study shows properties of MDP with higher and comparable to other composite materials; further research must be given better attention as potential substitute to be used as hardwood materials, especially in the production, design, and construction usage.

Sign in / Sign up

Export Citation Format

Share Document