INSTITUTO POLITÉCNICO NACIONAL
ESCUELA SUPERIOR DE INGENIERÍA MECÁNICA Y ELÉCTRICA
UNIDAD CULHUACÁN
IMPACT TESTING
DISEÑO DE ELEMENTOS MECÁNICOS
PRESENTAN:CÁRDENAS ALVAREZ JULIO CÉSAR
EDUARDO JAVIER GRANADOS SÁNCHEZ
México, D.F. Marzo 2015
ASESORA:
MAGDALENO VÁSQUEZ RODRÍGUEZ
ÍNDICE
IMPACT TESTING PRACTICE.
Introducción………………………………………………………………………..………1
Capítulo I
CHARPY AND IZOD IMPACT TESTING
Summary…………………………………………………………………………………...2
Significance and use ……………………………………………………………………..3
Testing machines………………………………………………………………………….3
Sampling …………………………………………………………………………………..5
Number of specimens ……………………………………………………………………5
Type and size …………………………………………………………………………….5
Configuration and orientation …………………………………………………………...7
Subsized specimens ……………………………………………………………………10
Preparation of the apparatus …………………………………………………………..10
Temperature control……………………………………………………………………..11
Capítulo II
PROCEDURE OF CHARPY METHOD
Temperature ……………………………………………………………………………..12
Positioning ……………………………………………………………………………….13
Recovering ………………………………………………………………………………13
Individual test values ………………………………………………………….………..13
Fracture appearance ……………………………………………………………….…..13
Lateral expansion ……………………………………………………………………….14
Report……………………………………………………………………………………..19
Capítulo III
PROCEDURE OF IZOD METHOD
Scope……………………………………………………………………………..…….…21
Type of test………………………………………………………………………….……22
Apparatus…………………………………………………………………………………24
Test specimens…………………………………………………………………………..30
Conditioning………………………………………………………………………………31
Proceder………………………………………………………………………………….31
Report……………………………………………………………………………………..33
Bibliografía……………………………………………………………………….………34
Anexos……………………………………………………………………………………34