BS 2782-3.354A&B(1991) : 1991 AMD 8635

Committees responsible
National foreword
Methods
1 Scope
2 Normative references
3 Definitions
4 Principle
5 Apparatus
6 Test specimens
7 Procedure
8 Expression of results
9 Precision
10 Test report
Annexes
A Determination of bounce-correction factor
B Instructions for the construction and use of a
     windage and friction correction chart for method B
C Determination of correction factor
Tables
1 Characteristics of pendulum impact-testing machine
2 Specimen types and dimensions and distances between
     supports
Figures
1 Diagram showing relationship of pendulum to
     specimen clamps for method A
2 Diagram showing relationship of pendulum to
     specimen clamps for method B after specimen rupture
3 Test specimens
A.1 Typical correction-factor curve for single bounce
     of crosshead specimen-in-head tensile-impact
     machine
B.1 Method of construction of a windage and friction
     correction chart
B.2 Sample windage and friction correction chart

Describes two methods for determining energy required to rupture test specimens of plastics under a specified tensile-impact velocity. Can be used for materials too flexible or too thin to be tested with impact tests and for more rigid materials. Used for investigating the behaviour of specified specimens under specified impact velocities. Applicable to specimens prepared from moulding materials or to specimens taken from finished or semi-finished products. Suitable for production control as well as for quality control. Covers normative references, definitions, principle, apparatus, test specimens, procedure, expression of results, precision and test report. AMD 8635 RENUMBERS THIS STANDARD