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Viewing 1 to 30 of 3146
2015-04-14
Technical Paper
2015-01-1356
Atishay Jain
Swingarm, originally known as the swing fork or pivoted fork is a dynamic structural part of the rear suspension of most modern motorcycles. It is used to hold the rear axle firmly, while pivoting vertically on the frame, to allow the suspension to absorb bumps in the road. Driving and braking loads are also transmitted through the swing arm, and thus, it plays a major role in vehicle dynamics. Weight minimization is important in a swingarm as it is largely an unsprung mass. The conventional swingarm design includes steel tubing and sheet metal structures. Due to higher forces near the pivot, conventional swingarm are inherently over-designed as they use tubular structures of same cross section through the entire length of the swingarm. An aluminum alloy swingarm design even when subjected to casting manufacturing constraints, has the potential for better material layout and weight minimization.
2015-04-14
Technical Paper
2015-01-0573
Tau Tyan, Yu-Kan Hu, Dana Sun, Leonard Shaner, Matt Niesluchowski, Nand Kochhar, Guofei Chen, Ming Shi
Motivated by a combination of increasing consumer demand for fuel efficient vehicles, more stringent greenhouse gas and 2025 Corporate Average Fuel Economy (CAFE) standards, automotive manufacturers are working to innovate in all areas of vehicle design to optimize fuel efficiency. In addition to improved aerodynamics, enhanced powertrain technologies and alternative fuel vehicles, reducing vehicle weight by using lighter materials has been identified as one of the most important strategies in future vehicle development. Weight reduction in vehicle components, sub-systems and systems not only reduces the energy needed to overcome inertia forces but also can trigger additional mass reduction elsewhere and enable significant mass reduction in full vehicle levels.
2015-04-14
Technical Paper
2015-01-0702
Bita Ghaffari, Jonathan Dekam, Kevin Haddix, Kimberly Lazarz, Sergey Titov, Roman Maev
Adhesive bonding technology has gained increased significance in automotive industry, especially with the growing use of aluminum alloy body structures. The variability in thicknesses of the metal and adhesive layers, as well as the variability in joint geometry, of automotive components has presented challenges in nondestructive evaluation of adhesive joints. These issues have recently been resolved for steel-adhesive joints through the use of an ultrasonic pulse-echo technique. The difference in acoustic impedance of steel and Al, however, leads to a lack of robustness in using the same technique for Al-adhesive joints. In this paper, we present the results from utilizing a modified version of this pulse-echo algorithm to inspect Al-adhesive joints in both laboratory and production environments. A 52-element, 10 mm X 10 mm, 15-MHz matrix array of ultrasonic transducers was used to obtain the echotrains, analysis of which produced a C-scan image of the adhesive bead.
2015-04-14
Technical Paper
2015-01-0687
Guang Wang, Xueyuan Nie, Jimi Tjong
In order to reduce the weight of an automotive engine, an aluminum alloy engine block without cast iron liner has been successfully used to replace the gray cast iron engine. However, the low surface hardness of the aluminum alloy may cause high wear and friction on the aluminum cylinders. To overcome these drawbacks, a few surface processing technologies are used to protect the surface of cylinders. Among them, plasma transferred wire arc (PTWA) thermal spraying coating is becoming popular. Plasma electrolytic oxidation (PEO) coating is also proposed for increasing the wear resistance of aluminum alloy and reducing the friction between the cylinder and piston. In this work, a PEO coating with a thickness of 15 um was prepared, and a high speed pin-on-disc tribometer was used to study the tribological behavior of the coating at oil lubricant conditions. Different surface roughness of the coating and a large range of the sliding speeds were employed for the tests.
2015-01-15
Standard
AMS4090F
This specification covers an aluminum alloy in the form of plate. This plate has been used typically for structural applications requiring plate with high strength, moderate fatigue strength, and high fracture-toughness, but usage is not limited to such applications.
2015-01-14
Standard
AMS7912D
This specification covers an aluminum-beryllium alloy in the form of bars, rods, tubing, and shapes consolidated from powder by extrusion.
2015-01-14
Standard
AMS7913D
This specification covers an aluminum-beryllium alloy in the form of sheet and plate consolidated from powder by extrusion and then rolled.
2015-01-14
Technical Paper
2015-26-0035
Krishnan Sadagopan, Somasundaram Suresh Kumar, Arulsivan T, Senthilnathan Karunakaran
Abstract The cylinder head of a diesel engine is a multi-functional entity, decidingthe performance and emission parameters of the engine. It also acts as a structural and sealing member. It accommodates ports for gas exchange process; injectors for combustion process, cooling passages optimized for heat transfer, valve train mechanism, and lubrication circuits and in addition in our case integrated common rail fuel injection pump drive and systems. Aluminum is light weight with benefits. Combustion is direct injection subject to higher thermal and mechanical loads, it must be robust enough to withstand the high operating temperature and peak firing pressure. The design and development of effective Intake and Exhaust Ports remains critical to improve volumetric efficiency. Compactness not only helps in packaging by having optimum LBH but also in making it light.
2015-01-14
Technical Paper
2015-26-0066
Aravind Vadiraj, Shashank Tiwari, Ashutosh Dasare
Abstract Mechanical and wear properties of Al alloyed gray cast iron (0.5% and 1.0%) were compared with that of Mo (1.0%) and Cu (0.77%) alloyed gray cast iron in this investigation. All the alloys showed pearlitic microstructure. The graphite morphology varied due to varying chemistry. The fracture surface showed “cabbage” like dimpled morphology indicating the predominant ductile fracture. It was found that the Mo containing cast iron show 25 to 30% higher strength and 6 to 7 times better wear resistance compared to Al containing cast irons. The worn surface showed oxide formation during sliding.
2015-01-14
Technical Paper
2015-26-0169
Simhachalam Bade, Lakshmanarao C
Abstract There is a growing need for improved conceptual vehicle designs along with alternative materials to reduce the damage to the passengers and structures in aerospace and automotive industries. The energy absorption characteristics of materials play a major role in designing a safe vehicle for transport. In this paper, compression behavior and energy absorption of aluminum alloy AA6061 and AA7005 tubes in T4 and T6 conditions are investigated by experimental and numerical methods. The AA7005 and AA6061 tubes are solution heat treated and then aged to achieve the final strength in T6 condition. Experimental compression test results have shown improved energy absorption of tubes in T6 condition compared to tubes in T4 condition. There is less variation of energy among the tested samples. The mean load is compared with the results obtained from analytical formulae. Tensile properties have been obtained from tensile tests using UTM for both AA6061 and AA7005 tubes.
2015-01-07
Standard
AMS7911D
This specification covers aluminum-beryllium powders consolidated by hot isostatic pressing (HIP) into the form of bar, rod, tubing, and shapes.
2015-01-05
Standard
AMS4153L
This specification covers an aluminum alloy in the form of extruded bars, rods, wire, profiles, and tubing up to 32 square inches (206 square cm) in area.
2015-01-05
Standard
AMS4159E
This specification covers an aluminum alloy in the form of extruded bars, rods, wire, profiles, and tubing with a nominal diameter or least thickness (wall thickness of tubing) up to 5.000 inches, inclusive.
2015-01-05
Standard
AMS4479
This specification covers an aluminum alloy in the form of extruded profiles with a maximum cross-sectional area of 25 in2 (160.29 cm 2 ) and nominal thicknesses from 0.250 to 2.500 inch, inclusive (6.3 to 63.50 mm, inclusive).
2015-01-05
Standard
AMS4480
This specification covers an aluminum alloy in the form of seamless, drawn tubing.
2015-01-05
Standard
AMS4154R
This specification covers an aluminum alloy in the form of extruded bars, rods, wire, profiles, and tubing.
2015-01-05
Standard
AMS4535D
This specification covers a copper beryllium alloy in the form of mechanical tubing. This tubing has been used typically for parts requiring a combination of high strength, wear resistance, and corrosion resistance and where thermal conductivity, electrical conductivity, and low magnetic susceptibility may be important, but usage is not limited to such applications. While the materials, methods, applications, and processes described or referenced in this specification may involve the use of hazardous materials, this specification does not address the hazards which may be involved in such use. It is the sole responsibility of the user to ensure familiarity with the safe and proper use of any hazardous materials and to take necessary precautionary measures to ensure the health and safety of all personnel involved.
2014-12-29
Standard
AMS4037Q
This specification covers an aluminum alloy in the form of sheet and plate from 0.008 to 4.000 inches (0.20 to 101.60 mm) in thickness, inclusive (See 8.4).
2014-12-23
Standard
AMS4028H
This specification covers an aluminum alloy in the form of sheet and plate from 0.020 to 1.000 inches (0.51 to 25.4 mm) thick (See 8.3).
2014-12-23
Standard
AMS4347D
This specification covers an aluminum alloy in the form of sheet from 0.020 to 0.249 inch (0.51 to 6.32 mm), inclusive, in thickness (See 8.5).
2014-12-22
Standard
AMS4366
This specification covers an aluminum-lithium alloy in the form of extruded profiles with a maximum cross-sectional area of 19 square inches (123 cm 2 ) and a maximum circle size of 11 inches (279mm) from 0.040 to 0.499 inches (1.00 to 12.50 mm) in thickness.
2014-12-22
Standard
AMS4353
This specification covers an aluminum alloy in the form of extruded round rods. This specification covers products from 1.750 to 5.900 inches (44.45 to 150.00 mm) in diameter.
2014-12-22
Standard
AMS4113F
This specification covers an aluminum alloy in the form of extruded profiles such as angles, channels, tees, zees, I-beams, and H-beams. These products have been used typically for parts requiring moderate strength, especially where such parts require brazing or welding during fabrication, but usage is not limited to such applications.
2014-12-22
Standard
AMS4050J
This specification covers an aluminum alloy in the form of plate. This plate has been used typically for parts requiring a high level of mechanical properties and good resistance to stress-corrosion cracking, but usage is not limited to such applications.
2014-12-22
Standard
AMS4141G
This specification covers an aluminum alloy in the form of die forgings and forging stock ordered to inch/pound units. These forgings have been used typically for parts requiring good resistance to stress-corrosion cracking but with lower strength than AMS4126, but usage is not limited to such applications.
2014-12-21
WIP Standard
AMS4371B
This specification covers a magnesium alloy in the form of rolled plate. This product has been used typically for parts requiring a combination of light weight, high yield strength up to 480 °F (250 °C), relatively high corrosion resistance, and good flammability resistance for magnesium alloys,but usage is not limited to such applications.
2014-12-11
Standard
AMS4140K
This specification covers an aluminum alloy in the form of die forgings and forging stock.
2014-12-11
Standard
AMS4111E
This specification covers an aluminum alloy in the form of die forgings, hand forgings, and forging stock.
2014-11-18
Standard
AMS4130N
This specification has been declared “NONCURRENT” by the Aerospace Materials Division, SAE, as of August 2009. It is recommended, therefore, that this specification not be specified for new designs. “NONCURRENT” refers to those materials which may have been widely used previously and which may be required for production or processing of existing designs in the future. The Aerospace Materials Division, however, does not recommend these specifications for future use in new designs. “NONCURRENT” specifications are available from SAE upon request.
2014-11-14
Standard
AMS4125L
This specification has been declared “NONCURRENT” by the Aerospace Materials Division, SAE, as of August 2009. It is recommended, therefore, that this specification not be specified for new designs. “NONCURRENT” refers to those materials which may have been widely used previously and which may be required for production or processing of existing designs in the future. The Aerospace Materials Division, however, does not recommend these specifications for future use in new designs. “NONCURRENT” specifications are available from SAE upon request.
Viewing 1 to 30 of 3146

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