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A new appraisal of the thermomechanical behaviour of a hybrid composite brake disc in a formula vehicle

Force Motors-Pradeep Chandrasakaran
Sri Krishna College of Engineering and Technology-Soundararajan Ranganathan, Sathishkumar Kuppuraj, Shanthosh Gopal
  • Technical Paper
  • 2019-28-2572
To be published on 2019-11-21 by SAE International in United States
A new appraisal of the thermomechanical behaviour of a hybrid composite brake disc in a formula vehicle Research Objective This paper presents a hybrid composite brake disc with reduced Un Sprung Weight clearing thermal and structural analysis in a formula vehicle.Main purpose of this study is to analyse thermomechanical behaviour of composite brake disc for a formula vehicle under severe braking conditions. Methodology In the disk brake system, the disc is a major part of a device used for slowing or stopping the rotation of a wheel. Repetitive braking of the vehicle leads to heat generation during each braking condition. Based on the practical understanding the brake disc was remodelled with unique slotting patterns and grooves, using the selected aluminium alloy of (AA8081) with reinforcement particle of Silicon carbide (SiC) and Graphite (Gr) as a hybrid composite material for this proposed work. In First Phase of this Project work, By varying slotting pattern and groove angles the transient thermal and structural analysis using ANSYS workbench ,the hybrid composite disc plate of disk brake is done.The…
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Multi Characteristics Optimization of Treated Drill Tool in Drilling Operation Key Process Parameter Using TOPSIS and ANOVA Technique

SRM Institute of Science and Technology-Sundar Singh Sivam Sundarlingam Paramasivam, Aishik Banerjee, Avanti Kulkarni
Published 2019-10-11 by SAE International in United States
To survive in the present global competitive world, the manufacturing sectors have been making use of various tools to achieve the high quality products at a comparatively cheaper price. Appropriate cutting set up must be used to further better the machinability of a work piece material. A longer life of the tools and equipment’s are important factors in any industry. Since the inception of the machine tool industry, cutting tool life and tool wear remain a subject of deep interest to study its failure and improvement. The present study finds out the optimum cutting results in drilling of AM60 magnesium alloy using different cryogenically treated cutting inserts. The Utility concept coupled with Taguchi with Multi response approach (TOPSIS) was employed. According to Analysis of variance (ANOVA) results, the feed was the major dominating factor followed by the cutting speed. This work deals with optimization approaches for the determination of the optimum process parameters by cryogenically treated drill HSS tools which minimizes surface roughness, torque, tool life, entry burr and tool cost, and maximizes material removal…
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Experimental Investigation of Silicon Carbide Nanoparticles Reinforced Magnesium Alloy (AZ91E) Metal Matrix Composite by Vacuum Stir Casting Method

Centre for Automotive Materials, SRMIST-Chandradass Jeyaseelan, Baskara Sethupathi Paramathma
PRIST-Thirugnana Sambandham Thangavel, Kannan Mahadevan
Published 2019-10-11 by SAE International in United States
In the present investigation silicon carbide nanoparticles reinforced magnesium alloy [AZ91E] composites were prepared by vacuum stir casting process in an inert atmosphere. Required amount of silicon carbide nanoparticles with grain size of 50nm was added into AZ91E molten melt with constant stir speed of 600 rpm and vacuum pressure of 1 lpm to obtain magnesium alloy composite containing 0, 5, 7.5 and 10 wt.% SiCp nanoparticles. The prepared composites were subjected to mechanical and microstructure studies. The mechanical properties were found to increase with the addition of silicon nanoparticles compared to unreinforced magnesium alloy. The maximum impact strength, yield strength and tensile strength were found to be 29.13J, 156 MPa and 401.13 MPa respectively. Microstructure studies reveal uniform distribution of silicon carbide in magnesium alloy matrix.
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Investigation of Setting Input Process Parameters for Getting Better Product Quality in Machining of AM60 Magnesium Alloy - TOPSIS and ANOVA Approach

SRM Institute of Science and Technology-Krishnaswamy Saravanan, Raj Rajendran, Sundar Singh Sivam Sundarlingam Paramasivam, Durai Kumaran, Harish Sriram
Tishk International University-Ganesh Babu Loganathan
Published 2019-10-11 by SAE International in United States
This investigation shows the improvement of Machining parameters on AM-60 Mg alloy made with the help of Gravity Die Casting and with reactions upheld symmetrical cluster with “Technique for Order Preference by Similarity to Ideal Solution” (TOPSIS). Which Focuses on the streamlining of Machining parameters utilizing the system to get least surface Roughness (Ra), Minimum Tool Wear, minimum Cutting Time, Power Requirement and Torque and Maximize MRR. A good amount of Machining tests was directed in view of the L9 Orthogonal array on CNC machine. The trials were performed on AM60 utilizing cutting device of grade-ISO 460.1-1140-034A0-XM GC3 of 12,16 and 25 mm width with cutting point of 140 degrees, all throughout the test work under various cutting conditions. TOPSIS and ANOVA were utilized to work out the major vital parameters like Cutting speed, feed rate, Depth of Cut and Tool Diameter which influence the Response. The normal qualities and estimated esteems are genuinely close. The given model can be utilized to choose the level of Machining parameters.
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Aluminum Alloy, Hand Forgings 7.5Zn - 1.6Cu - 1.5Mg - 0.12Zr (7085-T7452) Solution Heat Treated, Compression Stress-Relieved, and Overaged

AMS D Nonferrous Alloys Committee
  • Aerospace Material Specification
  • AMS4414
  • Current
Published 2019-09-19 by SAE International in United States
This specification covers an aluminum alloy in the form of hand forgings 12 inches (305 mm) and under in nominal thickness and of forging stock.
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Castings, Sand, Magnesium Alloy 5.1Y - 3.0Re - 0.70Zr (WE54A - T6) Solution and Precipitation Heat Treated

AMS D Nonferrous Alloys Committee
  • Aerospace Material Specification
  • AMS4426B
  • Current
Published 2019-09-19 by SAE International in United States
This specification covers a magnesium alloy in the form of sand castings.
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Magnesium Alloy, Sand Castings, 4.0Y - 2.3Nd - 0.7Zr (WE43B - T6), Solution and Precipitation Heat Treated

AMS D Nonferrous Alloys Committee
  • Aerospace Material Specification
  • AMS4427D
  • Current
Published 2019-08-28 by SAE International in United States

This specification covers a magnesium alloy in the form of sand castings.

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Aluminum Alloy Bars, Rods, and Wire, Rolled or Cold Finished 5.6Zn - 2.5Mg - 1.6Cu - 0.23Cr (7075-F) As Fabricated, or When Specified, Annealed (7075-O)

AMS D Nonferrous Alloys Committee
  • Aerospace Material Specification
  • AMS4186E
  • Current
Published 2019-08-01 by SAE International in United States
This specification covers an aluminum alloy in the form of bars, rods, and wire, in the sizes shown in 3.3.3, in the “as fabricated (F) temper” (see 8.5). When specified, product shall be supplied in the annealed (O) condition.
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Magnesium Alloy, Sand Castings 2.8Nd - 1.4Gd - 0.4Zn - 0.6Zr (EV31A - T6) Solution and Precipitation Heat Treated

AMS D Nonferrous Alloys Committee
  • Aerospace Material Specification
  • AMS4429B
  • Current
Published 2019-08-01 by SAE International in United States
This specification covers a magnesium alloy in the form of sand castings.
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Aluminum Alloy, Die and Hand Forgings and Rolled Rings 5.6Zn - 2.5Mg - 1.6Cu - 0.23Cr (7075-T6) Solution and Precipitation Heat Treated

AMS D Nonferrous Alloys Committee
  • Aerospace Material Specification
  • AMS4126D
  • Current
Published 2019-08-01 by SAE International in United States
This specification covers an aluminum alloy in the form of die forgings 4 inches (102 mm) and under in nominal thickness at time of heat treatment, hand forgings up to 6 inches (152 mm) incl, in as forged thickness, rolled rings with wall thickness up to 3.5 inches (89 mm) incl, and stock of any size for forging or rolled rings (see 8.6).
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