Testing for Rotational Moulding (RM) and Service Capabilities of - PowerPoint PPT Presentation

Testing for Rotational Moulding (RM) and Service Capabilities of BITS BITS Pilani Dr. Sachin Waigaonkar K K Birla Goa Campus

Outline • About BITS Pilani • Different Quality Tests in Rotational Moulding • Service Capabilities for Rotational Moulding Industry. • Conclusions BITS Pilani, K K Birla Goa Campus

BITS Pilani-Four Accredited Campuses Dubai Campus (2000) Pilani Campus (1964) Goa Campus(2004) Hyderabad Campus(2008) BITS Pilani, K K Birla Goa Campus

University – Industry Linkage Practice School Programmes Committed to University – Industry Collaboration Since its inception (1964) Practice in Theory learnt Industry in classroom As on today, Collaboration with 300+ industries BITS Pilani, K K Birla Goa Campus

University – Industry Linkage Work-Integrated Learning and Collaborative Programmes [20,000 students on roll | 30,000 students graduated] 33 Organizations | 24 Degree Programmes BITS Pilani, K K Birla Goa Campus

T esting in Rotational Moulding • Testing of Raw Materials:  Testing of Pellets and  Testing of Powder • Testing of Product.( Fit, Form and Function) • Long Term Testing of RM Products. • Advanced Tests for Material Development BITS Pilani, K K Birla Goa Campus

T esting of Raw Material (Pellets): • Density • Melt Flow Index (MFI) • Shape, Size Colour of Pellets • Tensile Strength / Modulus • Flexural Modulus • Heat Distortion Temperature (HDT) • Environmental Stress Cracking Resistance (ESCR) BITS Pilani, K K Birla Goa Campus

Powder Characterization • Dry Flow Test • Bulk Density Test • Sieve Analysis - Particle Size Distribution • Microscopic View for Characterization of Powder. BITS Pilani, K K Birla Goa Campus

T esting of form features of the product: • Dimensions of Product • Profile • Angularity • Depth • Wall Thickness Distribution • Shrinkage and Warpage BITS Pilani, K K Birla Goa Campus

Mechanical Properties of the product: • Density of part • Tensile Strength and Modulus • Flexural Strength and Modulus • Low Temperature Impact Strength • HDT • ESCR • Gel Cure Test (XLPE), etc. BITS Pilani, K K Birla Goa Campus

Long T erm and Advanced T esting • Colour Testing in Light booth • Weatherability using Xenon Arc Lamp • Differential Scanning Calorimetry (DSC) • Dynamic Mechanical Testing Creep Testing using DMA • Thermal Gravimetric Analysis (TGA) • Scanning Electron Microscopy (SEM) • Compounding Studies using Torque Rheometer. • Rheological Studies using Parallel Plate rheometry A few important tests are discussed here BITS Pilani, K K Birla Goa Campus

Density • The specific gravity or density is a property measured to:  Identify a material,  Follow physical changes in a sample,  Indicate degree of uniformity among different sampling units or specimens.  To calculate strength-weight and cost-weight ratios. BITS Pilani, K K Birla Goa Campus

Effect of Density on Different Properties # • Tensile Strength • HDT • Stiffness • Shrinkage • Hardness • Barrier Properties Property • Chemical Resistance • Impact Strength • ESCR • Optical Properties • Ductility Density #: Ref: R.J. Crawford, Rotational Moulding, Rapra Review Report, 71 BITS Pilani, K K Birla Goa Campus

Testing of Density • Ref: ASTM D-792 or ISO 1183 method D. BITS Pilani, K K Birla Goa Campus

T esting of Powder: Dry Flow and Bulk Density Ref: Association of Rotational Molders, Test Method for Flowability and Apparent Density of Polyethylene Powders, Version 2.1 – November 2011, pp-2-8, ASTM 1895-69 with conditions redefined for use in rotational moulding BITS Pilani, K K Birla Goa Campus

Melt Flow Index (MFI) Dynisco MFI in Our Lab Schematic Ref: ASTM D -1238 BITS Pilani, K K Birla Goa Campus

Effect of MFI on Different Properties # • Flow Properties e.g. Viscosity Property • Impact Strength • Tensile Strength • ESCR • Weatheribility • Chemical Resistance • Ductility MFI #: Ref: R.J. Crawford, Rotational Moulding, Rapra Review Report, 71 BITS Pilani, K K Birla Goa Campus

ESCR Ref: ASTM D-1693 BITS Pilani, K K Birla Goa Campus

T esting of T ensile Properties UTM in Lab (Load Cell 0-10 KN) Typical Stress-Strain Plot Ref : ASTM D 638 BITS Pilani, K K Birla Goa Campus

T esting of Flexural Properties Schematic of Flexural Testing Lab Testing Set Up Ref : ASTM D 790 BITS Pilani, K K Birla Goa Campus

Typical Flexural Curves Ref : ASTM D 790 BITS Pilani, K K Birla Goa Campus

Schematic of Low T emp. Impact T est Ref: ARM Low Temperature Impact Test BITS Pilani, K K Birla Goa Campus

HDT : Schematic and Set Up Schematic of Flexural Testing Lab Set Up for HDT Ref: ASTM D 648 BITS Pilani, K K Birla Goa Campus

Geometry and Form T esting: Coordinate Measuring Machine (CMM) Testing of product for Dimensions, Profile, Depth, Angularity, etc. BITS Pilani, K K Birla Goa Campus

Other Facilities at BITS GOA ( will be replaced with Photos) • Dynamic Mechanical Analyzer (DMA): TA Instruments USA • Differential Scanning Calorimetry (DSC). • Thermo gravimetric Analysis (TGA) • Scanning Electron Microscope • Templogger • Injection Moulding Machine: Ferromatic Millerkon -50 T • Compression Moulding Press-32 T • 3-D printer for Rapid Prototyping: Make Stratasys • ROTOSIM. • Pro-E, ANSYS and other CAE tools. BITS Pilani, K K Birla Goa Campus

Conclusion: Our Service Capabilities Test Standard Density ASTM D 1505/D-4883/D-792 or ISO 1183 method D. Dry Flow and Bulk Density ASTM 1895-69 with conditions redefined for use in rotational moulding MFI ASTM D -1238 ESCR ASTM D-1693 Tensile Strength and Modulus ASTM D 638 Type I to IV Flexural Strength and Modulus ASTM D 790 Low Temperature Dart Impact ARM International HDT ASTM D 648 BITS Pilani, K K Birla Goa Campus

Thanks “ The best Research will give the best Teaching and the best Teaching will give the best Research” Dr. APJ Abdul Kalam. BITS Pilani, K K Birla Goa Campus