Application and Research Progress of Aluminum Alloy Bridge Decks

2012 ◽  
Vol 517 ◽  
pp. 763-770
Author(s):  
Yang Zhang ◽  
Jun Feng Qiu ◽  
Hei Bai
Keyword(s):  
Aluminum Alloy ◽  
Bridge Decks ◽  
Weight Ratio ◽  
High Strength ◽  
Cost Effective ◽  
Dynamic Responses ◽  
Research Progress ◽  
Fatigue Properties ◽  
Typical Application ◽  
Bridge Structures

In order to increase live-load carrying capacity and life of bridges, aluminum alloy bridge decks have been widely used in bridge structures for more than 70 years because of the features of high strength-to-weight ratio, excellent corrosion resistance, ease of fabrication and recovery, rapid construction, maintenance-free and cost effective. First, this paper provides in detail the advantages of aluminum alloy bridge decks and the main areas of aluminum alloy applications in bridges can also be pointed out. Then, a brief overview of typical application examples and structural shapes of aluminum alloy bridge decks are introduced. At the same time, a state-of-the-art review on the researches of aluminum alloy bridge decks, related to static behaviors, fatigue properties, dynamic responses, structural systems and cost effective, is presented. Finally, the perspectives of research and development on aluminum alloy bridge decks are discussed.

TUNGUM ALLOY

Alloy Digest ◽  
2012 ◽  
Vol 61 (5) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Weight Ratio ◽  
High Strength ◽  
Fatigue Properties ◽  
Excellent Corrosion Resistance

Abstract Tungum alloy combines an unusually high strength-to-weight ratio, with ductility, excellent corrosion resistance, and good fatigue properties. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming. Filing Code: Cu-806. Producer or source: Tungum Ltd.

scholarly journals EXPERIENCE IN THE DEVELOPMENT AND USE OF ALUMINUM ALLOY CASING FOR CONDITIONS OF HIGH CONTENT OF ACID GASES IN FORMATION FLUIDS

2019 ◽  
Vol 121 ◽  
pp. 04013
Author(s):  
Vladimir Sledkov ◽  
Mikhail Gelfgat ◽  
Dmitry Basovich
Keyword(s):  
Aluminum Alloy ◽  
Aluminium Alloy ◽  
Weight Ratio ◽  
High Strength ◽  
Acid Gases ◽  
Construction Costs ◽  
Corrosion Resistant

When selecting a casing material for fields with a high content of H2S and CO2, it is recommended to use specialized corrosion-resistant tubulars with high content of chrome of the Sanicro 29 type. The high cost of the material can be critical for the project economy. A promising approach for these problems elimination could be the application of aluminium alloy casing pipes. They are remain inert to corrosion even if the formation environment is fully saturated with H2S and/or CO2. They are also lightweight, have high strength-to-weight ratio, and thus decrease the existing tensions in the string and reduce well construction costs.

Press-Formability of Aluminum Alloy Sheets of Solution-Hardening Type

1983 ◽  
Vol 105 (4) ◽  
pp. 235-242 ◽  
Author(s):  
N. Kawai ◽  
T. Mori ◽  
T. Nozaki
Keyword(s):  
Aluminum Alloy ◽  
Fracture Behavior ◽  
Plastic Anisotropy ◽  
Weight Ratio ◽  
High Strength ◽  
Solution Hardening ◽  
Solution Type ◽  
Metal Sheets ◽  
The Press ◽  
Press Formability

Recently, formable metal sheets with a high strength-to-weight ratio have been developed especially to conserve energy and resources. For this purpose, two conditions are necessary: the strengthening of the sheet metal and improvement of the press-formability, which are difficult to obtain together. In the present study, the conditions necessary for this are examined using solid-solution type aluminum alloy sheets. Moreover, a new measure to assess press-formability is proposed in terms of the strain-hardening capability and plastic-anisotropy based on fracture behavior of sheet metals.

Microwave Joining of Natural Fiber Reinforced Green Composites

2011 ◽  
Vol 410 ◽  
pp. 102-105 ◽  
Author(s):  
Inderdeep Singh ◽  
P. K. Bajpai ◽  
D. Malik ◽  
J. Madaan ◽  
N. Bhatnagar
Keyword(s):  
Adhesive Bonding ◽  
Natural Fiber ◽  
Weight Ratio ◽  
High Strength ◽  
Cost Effective ◽  
Parent Material ◽  
Environmental Benefits ◽  
Poly Lactic Acid ◽  
Material Strength ◽  
Neat Polymer

Natural fiber based bio-composites are gaining prime importance these days because of their high strength to weight ratio and environmental benefits. An increase in the application spectrum of these materials necessitates cost effective high quality processing in order to meet the stringent design requirements. In the present investigation, fully biodegradable natural fiber (grewia optiva) reinforced poly lactic acid (PLA) composite has been developed. The tensile strength of the composite has been found to increase by 75% of that of the neat polymer. The developed composites have been joined using the adhesive bonding and the microwave joining. The tensile shear strength of the joint has been experimentally evaluated and it has been found that the bond strength of adhesively bonded specimen (4.9% of the parent material strength) is substantially lower as compared to microwave joined specimen (62.85% of the parent material strength). The process of microwave joining has also been simulated using standard Multiphysics software and the results were in close agreement with the experimentally recorded values.

Investigation on Fatigue Damage and Fracture of Al-5Zn-2Mg High Strength Aluminum Alloy

2012 ◽  
Vol 184-185 ◽  
pp. 1030-1033 ◽  
Author(s):  
Shang Lei Yang ◽  
Qin Lin Lin ◽  
Chao Xu ◽  
Jia Hui Pan
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Crack ◽  
Average Rate ◽  
High Strength ◽  
Fatigue Loading ◽  
Optical Microscope ◽  
Fatigue Properties ◽  
High Strength Aluminum Alloy ◽  
Damage And Fracture ◽  
Micro Cracks

The tensile properties and fatigue properties were tested, and the fatigue fracture and damage behaviore of Al-5Zn-2Mg high strength aluminum alloy was investigated by means of optical microscope (OM) and scanning electron microscope (SEM). The results show that the grain of the Al-5Zn-2Mg high strength aluminum alloy is elongated after rolling deformation. The tensile strength of the Al-5Zn-2Mg aluminum alloy is 470MPa. The fatigue life is 6.4×104 cycle in R=0.1, f=99Hz, and σmax=210MPa. The average rate is 0.08μm per cycle from micro crack formed to 8mm of fatigue crack length. The fatigue crack forms in the surface. There are the fatigue striations in the fatigue crack propagation area. The crack velocity is about 2μm per cycle in propagation area. The damaged microstructure with the fatigue loading is loose, that indicates the micro cracks progressively emerge.

Effect of Quenching Media and Ageing Time on Al6061-Beryl Composites

2011 ◽  
Vol 110-116 ◽  
pp. 1374-1379 ◽  
Author(s):  
H.N. Reddappa ◽  
H.B. Niranjan ◽  
K.R. Suresh ◽  
Kestur Gundappa Satyanarayana
Keyword(s):  
Heat Treatment ◽  
Aluminum Alloy ◽  
Base Alloy ◽  
Ageing Time ◽  
Liquid Aluminum ◽  
Weight Ratio ◽  
High Strength ◽  
Artificial Ageing ◽  
Wear Properties ◽  
Quenching Media

— Aluminum alloy based metal matrix composites are becoming very popular because of their outstanding properties such as high strength to weight ratio, excellent mechanical properties and improved wear properties. From literature survey it was observed that very limited report available on Aluminum alloy-beryl composites, particularly on the effect of beryl content, quenching media and heat treatment on the mechanical and wear properties of Aluminum-beryl composites. Accordingly, the aims of the present study are (i) preparation of Al6061-beryl particles by liquid metallurgy method (stir cast) with possible standardization of the beryl addition to liquid Aluminum alloy, (ii) Study the effect of different quenching media and the beryl content (2-12 wt. %) on the mechanical and wear properties of these composites in both as cast and heat treated conditions. Heat treatment procedure of solutionising at temperature of 5300C for 1hour and quenching in different media (air, water and ice) followed by natural and artificial ageing for different times was adopted. It was observed that the addition of beryl particles to Al6061 alloy improves its hardness, tensile strength and wear resistance with increasing beryl content while the heat treatment had significantly improved these properties compared to that of base alloy and as cast composites.

scholarly journals Review on Multi-Pass Friction Stir Processing of Aluminium Alloys

2020 ◽  
Author(s):  
Oritonda Muribwathoho ◽  
Sipokazi Mabuwa ◽  
Velaphi Msomi
Keyword(s):  
Friction Stir Processing ◽  
Aluminium Alloys ◽  
Weight Ratio ◽  
High Strength ◽  
Fatigue Properties ◽  
Dissimilar Metals ◽  
Friction Stir ◽  
Aluminium Copper ◽  
The Impact ◽  
Welding Technique

Aluminium alloys have evolved as suitable materials for automotive and aircraft industries due to their reduced weight, excellent fatigue properties, high-strength to weight ratio, high workability/formability, and corrosion resistance. Recently, the joining of similar and dissimilar metals have achieved huge success in various sectors. The processing of soft metals like aluminium, copper, iron and nickel have been fabricated using friction stir processing. Friction stir processing (FSP) is a microstructural modifying technique that uses the same principles as the friction stir welding technique. In the majority of studies on FSP, the effect of process parameters on the microstructure was characterized after a single pass. However, multiple passes of FSP is another method to further modify the microstructure in aluminium castings. This study is aimed at reviewing the impact of multi-pass friction stir processed joints of aluminium alloys and to identify a knowledge gap. From the literature that is available on multi-pass FSP, it has been observed that the majority of the literature focused on the processing of plates than the joints. There is limited literature reporting on multi-pass friction stir processed joints. This then creates a need to study further on multi-pass friction stir processing on dissimilar aluminium alloys.

scholarly journals Effect of Cryogenic Treatment on Bisphenol Based Polymer Composite on Mechanical Properties

2019 ◽  
Vol 8 (3) ◽  
pp. 2416-2420
Keyword(s):  
Tensile Strength ◽  
Composite Materials ◽  
Flexural Strength ◽  
Cryogenic Treatment ◽  
Specific Property ◽  
Weight Ratio ◽  
High Strength ◽  
Cost Effective ◽  
Basic Part ◽  
Weight Percentage

Presently there are lot of materials that can be used in the fabrication of any item, so choosing a material is a major criteria. So the materials are chosen depending on the properties desired by the resulting item. The composite materials have better properties when compared with its individual components, metals and ceramics. The overall appeal of the product depends mainly on its durability, aesthetics and its final cost. Composite materials are cost effective and significantly satisfy the needs of the clients. By utilizing composite materials we can obtain high strength to weight ratio at a relatively economical cost. Moreover, they can be produced easily by basic part forming. Hybrid polymer composites have been studied of late which improves a specific property of the composite that is under question. Here a hybrid composite made of laminate of Nomex and HS glass sheets with varying percentage (1% - 2.5 %) of bisphenol dispersed in resin is prepared. The same samples were subjected to cryogenic treatment (24 hrs and 72 hrs). The results of tensile strength, flexural strength and hardness were compared for all the specimens 24 hrs cryogenic, 72hrs cryogenic and non-treated specimens. The results showed that the hardness of the cryogenic treated bisphenol based PMCs has increased with the weight percentage of Bisphenol indicating the fact that the laminates can withstand more loads at subzero temperatures The increase observed was about 3 – 4 % more in terms of BHN number. At the same time the tensile and flexural strengths have considerably reduced after treating the PMC cryogenically as the laminates becomes more brittle when treated. The tensile strength increased by about 10% approximately and the flexural strength reduced by 300%.

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