DEPC-MPR-043 Prediction of the Impact Performance of Plastics Mouldings, G D Dean and L E Crocker.

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1 NPL Reports DEPC-MPR-043 Prediction of the Impact Performance of Plastics Mouldings, G D Dean and L E Crocker. DEPC-MPR The Effect of Pressure on the Thermal Conductivity of Polymer Melts, A Dawson, M Rides and J Nottay. DEPC-MPR A Method for Predicting the Perceived Hardness of Soft- Touch Elastomeric Coatings and Over-Mouldings, L E Crocker, G D Dean and P E Tomlins. DEPC-MPR Physical Characterisation of Soft-Touch Materials, J. M. Urquhart and C. S. Brown, P E Tomlins, M Rides, A Dawson, M Gee, G Dean, C Hobbs, C Allen, S Gnaniah, A Calver and R Darling. DEPC-MPR Measurement of the rheological properties of adhesives, M Rides, B Duncan, A Dawson and C Allen. DEPC-MPR Correlating physical properties of adhesives with process and bonding performance, M Rides and B Duncan. DEPC-MPR Investigations into Sensation of "Softness" and Perception of the Tactile Properties of "Soft Touch" Thermoplastic Elastomers, H Petrie, N King and P Tomlins. DEPC-MPR-016 Review of Accelerated Ageing Methods and Lifetime Prediction Techniques for Polymeric Materials, A S Maxwell, W R Broughton, G Dean and G D Sims March DEPC-MPR-015 Review of Techniques for Monitoring the Environmental Degradation of Polymers A.S. Maxwell, March DEPC-MPR Rheological characterisation of filled materials: a review, M. Rides. DEPC-MPR Review of Measurement and Modelling of Permeation and Diffusion in Polymers, B Duncan, J Urquhart and S Roberts. DEPC-MPR A Review of Creep Modelling for Toughened Adhesives and Thermoplastics, GD Dean and WR Broughton. DEPC-MPR Determination of Material Properties and Parameters Required for the Simulation of Impact Performance of Plastics using Finite Element Analysis, G Dean and R Mera. DEPC-MPR Modelling creep in toughened adhesives for finite element analysis, G Dean and R Mera. DEPC-MPR The Effect of Uncertainty in Heat Transfer Data on The Simulation of Polymer Processing, J. M. Urquhart and C. S. Brown.

2 MATC (A) A Comparison of the Data Requirements and Predictive Accuracies of the Cavitation Model and a Simple Model for Non-linear Behaviour in Finite Element Systems G. Dean, B. Read and L. Wright. MATC (A) Comparison of the Measured and Predicted Deformation of a Circular Plate of an ABS Polymer Under Centre Loading G. Dean and L. Wright. MATC (A) 88 - Analysis of Failure Tests on Uniaxial Tensile and Plate Specimens of ABS G. Dean and L. Wright. MATC (A) 77 - Influence of Strain Rate and Temperature on the Stress/Strain Behaviour of Rubber-Toughened Plastics B. Read, G. Dean and L. Wright. MATC (A) 75 - A Further Evaluation of the Cavitation Model for Rubbertoughened Plastics G. Dean, B. Read and L. Wright. MATC (A) 56 - Effect of die geometry on shear viscosity and entrance pressure drop determination by capillary extrusion rheometry (M Rides, C Allen) October MATC (A) 49 - Review of Test Methods for Coating Adhesion A.S. Maxwell, September MATC (A) 44 - Latent Heat of Polymers Crystallised Under Pressure (E Arranz, C Brown, S Gnaniah, S Percio) September MATC (A) 35 - Effects of Cavity Growth and Orientation Hardening on the Stress/strain Behaviour of Rubber Toughened Plastics B. Read, G. Dean and L. Wright. MATC (A) 33 - Effect of Pressure on Thermal Conductivity of Polymers (D Mulligan, C Brown, T Fry, S Percio) July MATC (A) 28 - Improved testing using the melt flow rate instrument - multi-rate and extensional flow measurements (M Rides, C Allen and A Dawson) June MATC (A) 25 - Thermal Properties of Polymer Melts at Elevated Pressure from Compression Heating and Differential Scanning Calorimetry (C Hobbs, D Ferriss, S Roberts, S Gnaniah and C Brown) October MATC (A) 05 - Practical Guide for Designers and Manufacturers of Mouldings to Reduce the Risk of Environment Stress Cracking, A.S. Maxwell, February CMMT (A)301 - A Proposed Model for the Non-linear Stress/strain Behaviour of Rubber Toughened Plastics, B. Read, G. Dean and L. Wright.

3 CMMT (A)299 - Deformation of a Centrally Loaded Circular Plate of a Thermoplastic Material: Comparison of Measurements with Predictions using Finite Element Analysis G. Dean and L. Wright. CMMT (A)298 - On the Determination of Stress-strain Curves Under Biaxial Loading, P. Tomlins, M. Yazici and G. Dean. CMMT (A) Practical Guide to Selection of Environment Stress Cracking Test Methods for Plastics A.S. Maxwell and A. Turnbull, September CMMT (A) Characterisation of Environment Stress Cracking Susceptibility of Weld-line Defects by the Chemical Probe Technique, A.S. Maxwell and A. Turnbull, August CMMT (A)266 - Illustrations of the Application of Finite Element and Processing Simulation Analyses to Plastics, G. Dean, R. Shastri and R. Hunt. CMMT (A)256 - Committee Draft of an ISO Guide to the Acquisition and Presentation of Design Data for Plastics, G. Dean and R. Shastri. CMMT (A) 248 Draft ISO Standard for the determination of the transient extensional viscosity of polymer melts (M Rides). CMMT (A) 246 A review of Requirements for Improved Methods of Measuring Thermal Properties of Polymers (S Chakravorty). CMMT (A) 245 The Properties of Waxes Used in the Investment Casting Industry: Final Report (S Chakravorty). CMMT (A) 244 Properties of Investment Casting Waxes and Industrial Evaluation (S Chakravorty). CMMT (A) 244 Specification of Pressure-Volume-Temperature (PVT) Measurements Relevant to Industrial Polymer Processing (S Chakravorty). CMMT (A) 231 Review of Melt Mass flow rate and melt volume flow rate measurements for Polymer Melts (M Rides). CMMT (A) 226 Extensional rheometry of polymer melts: comparison of various grades of polyethylene and results of a recent intercomparison (M Rides, CRG Allen and S Chakravorty). CMMT (A) 226 October 1999 Verification of Hyperelastic test methods (BC Duncan, AS Maxwell, LE Crocker and RA Hunt). CMMT (A) 224 Measurement of Reactive Polymer Systems Report of work carried out for 6MMP14/04 (A Fry, P Monaghan and M Rides).

4 NPL Technical Review No.3 - Test Methods for Environment Stress Cracking of Polymeric Materials A Turnbull and A S Maxwell, July CMMT (A) 190 Assessment of the correlation between tack and viscoelasticity (BC Duncan and K Ogilvie-Robb), June CMMT (A) 184 Comparison between rheological and bulk specimen tests for creep and stress relaxation properties (BC Duncan), May CMMT (A) 183 Hyperelastic modelling of flexible adhesives (LE Crocker, BC Duncan, RG Hughes and JM Urquhart), May CMMT (A) 182 The Influence of Shear History on the Crystallization Behaviour of Talc Filled Polypropylenes (CRG Allen and PE Tomlins). CMMT (A) 178 Measurement methods for time-dependent properties of flexible adhesives (BC Duncan and AS Maxwell), May CMMT (A) 177 Evaluation of a multi-functional adhesives test station (AS Maxwell and BC Duncan), April CMMT (A) 171 Intercomparison of extensional flow characterization techniques for polymer melts: tensile stretching and converging flow methods (M Rides, CRG Allen and S Chakravorty). CMMT (A) 163 Pressure/Volume/Temperature (PVT) Behaviour of Polymers during Ultrafast Cooling (CB Hobbs and CS Brown). CMMT (A) 147 The Influence of Phthalocyanin Blue on the Crystallization Behaviour of Polypropylene (PE Tomlins and MJ Richardson). CMMT (A) 138 The Effects of Copper Contamination on the Properties of High Density Polyethylene (CA Scoggins, PE Tomlins and MJ Bevis). CMMT (A) 126 Problems Associated with the use of Recycled Plastics within the UK (PE Tomlins and CA Scoggins). CMMT (A) 111 A Strategy for Investigating the Influence of Processing Conditions on the Dimensional Stability of Injection Moulded Artefacts (PE Tomlins, JM Urquhart, G Lord and B Butler). CMMT (A) 80 Review of converging flow methods for determining the extensional flow behaviour of polymer melts (M Rides and S Chakravorty). CMMT (A) 66 The Dimensional Stability of Moulded Parts: A Review of the Technology Base (PE Tomlins). CMMT (A) 66 Crystallization of Kinetics in Polymer Melts (PE Tomlins). CMMT (A) 60 Predicting and Controlling the Dimensional Stability of Injection Moulded Plastic Parts (PE Tomlins). CMMT (A) 52 - The Dimensional Stability of Moulded Parts: A Review of The Technology Base (PE Tomlins).

5 CMMT (A) 52- Crystallization Kinetics in Polymer Melts (PE Tomlins). CMMT (A) 44 Review of extensional viscoelasticity measurement techniques for polymer melts (M Rides, CRG Allen and S Chakravorty). CMMT (A) 38 Industrial need for extensional viscoelasticity measurements (M Rides). CMMT (A) 31 Numerical simulation of the extrudate swell behaviour of polymer melts (M Rides). CMMT (A) 30 Evaluation of Mould Designs for Preparing Standard Plate Specimens of Plastics by Injection Moulding (M Rides and G Dean). CMMT (A) 26 Protocol for the Prediction of Creep of Plastic Components (A Woolf and CS Brown). CMMT (A) 25 - Capillary Extrusion Rheometry Intercomparison Using Polyethylene and Glass-fibre Filled Polypropylene Melts: Measurement of Sheer Viscosity and Entrance Pressure Drop (M Rides and CRG Allen). CMMT (A) 20 Rheological Measurements of Polymer Melts for Characterisation and Modelling Material Behaviour (M Rides and CRG Allen). CMMT (A) 19 An Ultrasonic technique for monitoring polymer cure online (J Bromhead). CMMT (A) 13 Effect of Pressure-Volume-Temperature Behaviour of Polymer Melts on Extrudate Swell Measurements (M Rides). CMMT (A) 11 Round Robin for Parallel Plate Oscillatory Rheometry Using Polyethylene and Polypropylene Melts (M Rides and CRG Allen). CMMT (A) 9 Intercomparison of Extrudate Swell Measurements Using Capillary Extrusion Rheometers for a Polyethylene Melt (CRG Allen and M Rides). CMMT (A) 8 Measurement of the Properties of a High Density Polyethylene Fibre Optic Covering (CRG Allen and CS Brown). CMMT (A) 7 - The Pressure Dependency of the Sheer Viscosity of Polymer Melts: An International Round Robin Study (S Chakravorty, M Rides, CRG Allen and CS Brown). CMMT (A) 4 Prediction of Creep Behaviour of Plastic Components (A Woolf and BE Read). DMM (A) 167 The Significance of Thermal Material Parameters in Polymer Processing (S Chakravorty and CS Brown). DMA (A) 166 The Use of Plate Bending Waves for Elastic Property Determination of Polymers (GD Dean).

6 DMM (A) 164 Modelling the rheology of an unsaturated polyester moulding material during cure (PAJ Gibbs and M Rides). DMM (A) 149 Rheological measurement methods for fibre filled plastics (M Rides). DMM (A) 141 In-line measurement of shear viscosity using an injection moulding machine (M Rides). DMM (A) 140 The measurement of viscosity by capillary rheometry: dwell time effects (CS Brown and CRG Allen). DMM (A) 137 Temperature Measurement of Polymer Melts during Flow (S Chakravorty, CRG Allen and CS Brown). DMM (A) 131 Industrial needs for polymer melt elasticity measurements (M Rides). DMM (A) 127 Theoretical basis for elasticity measurements of polymer melts and rubbers (M Rides). DMM (A) 123 Numerical simulation of the flow of thermosetting plastics: application to injection moulding (M Rides). DMM (A) 121 On the determination of extensional viscosity from capillary rheometer entrance pressure drop measurements using a numerical simulation of contraction flow (M Rides, IA Farah, AR Davies and K Thomas). DMM (A) 120 A Technique to Predict the Curing Behaviour of Unsaturated Polyester Materials (PAJ Gibbs and M Rides). DMM (A) 114 An Ultrasonic Measurement Technique to Determine the State of Cure in Thermosetting Materials (PAJ Gibbs, M Rides and P Williamson). DMM (A) 111 The performance of gloss meters on curving surfaces (A Cook and BC Duncan). DMM (A) 110 Stress relaxation in dough moulding compounds (A Cook, D Dawson and BC Duncan). DMM (A) 109 Measurement and modelling of bolted joint stress relaxation in plastics (A Cook, D Dawson and BC Duncan). DMM (A) 107 Modelling the Inhibition Cure Behaviour of Unsaturated Polyester Moulding Materials (PAJ Gibbs and M Rides). DMM (A) 106 Characterisation of surface appearance of injection moulded Dough Moulding Compounds (A Cook and PAJ Gibbs). DMM (A) 104 DUSOL Improved Software for Analysis of Ultrasonic Velocity Data on Anisotropic Materials (A Woolf).

7 DMM (A) 92 Modelling of Creep Data for Plastics (BE Read, GD Dean and PE Tomlins). DMM (A) 91 A Model for Non-linear creep and physical aging in PVC (BE Read, GD Dean and PE Tomlins). DMA (A) 106 An FFT Microcomputer Program for determining the Velocity of Ultrasonic Waves (A Woolf).

Modelling the behaviour of plastics for design under impact

Modelling the behaviour of plastics for design under impact G. Dean and L. Crocker MPP IAG Meeting 6 October 24 Land Rover door trim Loading stages and selected regions Project MPP7.9 Main tasks Tests