Classic Charpy notched-bar impact test; specimens with different cross-sections and materials Features - Charpy notched-bar impact test - classic method from destructive materials testing for quality control and analysis of the fracture behaviour of metallic materials - pendulum impact tester based on DIN EN ISO 148-1 Learning objectives/experiments - determine the notched-bar impact work - determine the notched-bar impact strength - analyse the fracture surface characteristics - plot a notched-bar impact work–temperature diagram - influence of notch shape, material and specimen temperature on the notched-bar impact work Specification [1] classic Charpy notched-bar impact test [2] pendulum impact tester based on DIN EN ISO 148-1 [3] hammer mass can be varied by adding or removing weights [4] brake to reduce the residual energy [5] safe operation thanks to two-hand release of the hammer [6] required protective cover for pendulum impact tester vailable as accessory WP 400.50 [7] scale for displaying the notched-bar impact work [8] notched-bar impact specimens (U/V/R notch): free cutting steel, heat treatable steel, construction steel, brass [9] system for data acquisition (WP 400.20) available as an option Technical data Pendulum impact tester - work capacity -- 15Nm -- 25Nm (with extra weights) - hammer -- weight: 2,05kg and 3,42kg (with extra weights) -- extra weights: 4x 0,342kg -- impact velocity: 3,8m/s -- head: 745mm Supports for specimens - gap: 40mm Notched bar impact specimens - LxW: 10x5mm, 10x10mm - cross-section at the notch root: 10x7mm, 10x5mm, 10x3mm Specimen materials - free cutting steel - heat treatable steel - construction steel - brass LxWxH: 1000x300x1000mm Weight: approx. 55kg
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