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

FORCE MOTORS, Pune , India.-Pradeep C
Sri Krishna College of Engg and Tech-Soundararajan R, Sathish Kumar K, Shanthosh G
  • 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…
 

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
  • Technical Paper
  • 2019-28-0055
To be published on 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 equipments 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…
 

Critical wear assessment of AA8011/Hybrid metal matrix composites with surface amendment using Friction Stir process

Sri Krishna College of Engg. and Tech.-Soundararajan Ranganathan, Shri Vignesh Ramachandran, Ramprakash Palanivelu, Saravanakumar Ramasamy
  • Technical Paper
  • 2019-28-0096
To be published on 2019-10-11 by SAE International in United States
Friction Stir Process (FSP) was used for surface modification of steel, titanium, aluminum and magnesium based alloy has been considerably reviewed during the last decade. FSP can improve surface properties such as abrasion resistance, hardness, strength, ductility, corrosion resistance, fatigue life and formability without affecting the bulk properties of the material. The aluminum alloy having low ductility and softness characteristics are restricted because of their poor tribological properties. Preliminary studies reveal that, an ideal circumstance is to improve the aluminum alloy material life cycles by the way of strengthening the surface layer which can be modified through reinforcing nano particles through FSP. By the way, this experiment was carried out to obtain three set of samples like virgin AA8011, AA8011 with shape memory alloy and AA8011 along with shape memory alloy and silicon nitride during FSP under optimal process parametric condition. The improved distributions of nanoparticles were obtained after each FSP pass and progress in mechanical properties was observed. On the other hand to assess the tribological performance of prepared hard surface, three samples were…
 

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
  • Technical Paper
  • 2019-28-0169
To be published on 2019-10-11 by SAE International in United States
In the present investigation silicon carbide nanoparticle reinforced magnesium alloy (AZ91E) composites were prepared by vacuum stir casting process in an inert atmosphere. Required amount of silicon carbide nanoparticle was added to AZ91E molten melt with constant stir speed of 600 rpm and vacuum pressure of 1 lpm so that the final composite contains 5, 7.5 and 10 wt.% SiC nanoparticle. The prepared composite was subjected to mechanical and microstructure studies. The addition of silicon nanoparticle enhances the mechanical properties compared to conventional magnesium alloy. Microstructure studies reveal uniform distribution of silicon carbide in magnesium alloy matrix.
 

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
  • Technical Paper
  • 2019-28-0136
To be published on 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 symmetrical exhibit 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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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.

 

Aluminum Alloy, Extruded Profiles (2043-T85) 2.8Cu - 1.65Li - 0.35Mg - 0.1Zr Solution Heat Treated, Stress Relieved by Stretching, and Aged

AMS D Nonferrous Alloys Committee
  • Aerospace Material Specification
  • AMS4450
  • Current
Published 2019-07-03 by SAE International in United States
This specification covers an aluminum alloy in the form of extruded rods, bars, and profiles (shapes) produced with thickness between 0.040 and 2.500 inches (1.02 to 38.10 mm) in thickness, and having a maximum cross sectional area of 23 in2 (15000 mm2) and a maximum circumscribing circle diameter (circle size) of 16 inches (406 mm) (see 8.4.1).
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Aluminum Alloy, Extruded Bar, Rod, and Shapes 5.6Zn - 2.5Mg - 1.6Cu - 0.23Cr 7075-T76(51X) Solution Heat Treated and Overaged

AMS D Nonferrous Alloys Committee
  • Aerospace Material Specification
  • AMS4317B
  • Current
Published 2019-07-02 by SAE International in United States
This specification covers an aluminum alloy in the form of extruded bars, rods, and shapes up to 4.000 inches, incl (101.60 mm, incl) in nominal diameter or least thickness, and having a nominal cross-sectional area up to 20 in2 (129 cm2) (see 8.5).
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Aluminum Alloy Extrusions 4.4Cu - 1.5Mg - 0.60Mn (2024-T3) Solution Heat Treated and Cold Worked

AMS D Nonferrous Alloys Committee
  • Aerospace Material Specification
  • AMS4152N
  • Current
Published 2019-06-17 by SAE International in United States
This specification covers an aluminum alloy in the form of extruded bars, rods, wire, shapes, and tubing produced with cross sectional area of 32 in2 (206 cm2) maximum.
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Training and Approval of Heat-Treating Personnel

AMS B Finishes Processes and Fluids Committee
  • Aerospace Standard
  • ARP1962B
  • Current
Published 2019-06-11 by SAE International in United States
This SAE Aerospace Recommended Practice (ARP) describes training and approval of personnel performing certain heat-treating and associated operations that could have a material impact on the properties of materials being heat treated. It also recommends that only approved personnel perform or monitor the functions listed in Table 1.
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