Publication detail
A Contribution to the Safety and Lifetime Assesment of Sintered Carbide WC-Co
VRBKA, J. VLK, M. KOTEK, V.
Czech title
Příspěvek k posouzení bezpečnosti a životnosti slinutého karbidu WC-Co.
English title
A Contribution to the Safety and Lifetime Assesment of Sintered Carbide WC-Co
Type
book chapter
Language
en
Original abstract
A proper modification of the Pisarenko-Lebedev and combined Mohr and maximum principal stress brittle fracture conditions was proposed for the safety evaluation, taking into account the plastic deformation in the compressive region. Two steps theoretical-experimental approach is suggested to astimate the low cycle fatigue. In the first one the stress time course is calculated in the most stressed costruction element. In the second step, the lifetime is measured experimentally with the help of the testing machine for the cubic specimens under the 2-D cyclic loading.
Czech abstract
Vhodná modifikace Pisarenkovy-Lebeděvovy podmínky křehkého lomu a kombinované podmínky Mohrovy a maximálního hlavního napětí byla navržena pro výpočet bezpečnosti, beroucí v úvahu plastickou deformaci v tlakové oblasti. Je navržen dvoustupňový teoreticko-experimentální přístup pro stanovení níckocyklické životnosti. V prvním kroku se vypočte časový průběh napětí v nejvíce namáhaném elementu konstrukce. Ve druhém kroku se určuje životnost experimentálně pomocí zkušebního zařízení pro krychlové vzorky při 2-D cyklickém zatěžování.
English abstract
A proper modification of the Pisarenko-Lebedev and combined Mohr and maximum principal stress brittle fracture conditions was proposed for the safety evaluation, taking into account the plastic deformation in the compressive region. Two steps theoretical-experimental approach is suggested to astimate the low cycle fatigue. In the first one the stress time course is calculated in the most stressed costruction element. In the second step, the lifetime is measured experimentally with the help of the testing machine for the cubic specimens under the 2-D cyclic loading.
Keywords in Czech
Podmínky pevnosti; životnost; nízkocyklová únava; biaxiální zkušební zařízení;
Keywords in English
Strength conditions; lifetime; low cycle fatigue; biaxial testing device;
RIV year
1997
Released
01.08.1997
Publisher
Technical University of Opole
Location
Opole, PL
ISBN
83-86708-4
Book
5th Intern. Conf. on Biaxial/Multiaxial Fatigue & Fracture.
Pages from–to
289–302
Pages count
14
BIBTEX
@inbook{BUT53239,
author="Jan {Vrbka} and Miloš {Vlk} and Vladimír {Kotek},
title="A Contribution to the Safety and Lifetime Assesment of Sintered Carbide WC-Co",
booktitle="5th Intern. Conf. on Biaxial/Multiaxial Fatigue & Fracture.",
year="1997",
month="August",
pages="289--302",
publisher="Technical University of Opole",
address="Opole, PL",
isbn="83-86708-4"
}