Sistema de baixo custo para nucleação de pré-trincas por fadiga em corpos de prova de tenacidade à fratura
| Autor: | Luis Rogerio de Oliveira Hein, Valdir Alves Guimarães, J. Zangrandi Filho |
|---|---|
| Přispěvatelé: | Universidade Estadual Paulista (Unesp) |
| Rok vydání: | 2001 |
| Předmět: |
Materials science
business.industry Mechanical Engineering Nucleation Crack tip opening displacement Structural engineering fracture mechanic Condensed Matter Physics fracture toughness Fracture toughness mechanical testing Mechanics of Materials lcsh:TA401-492 Mechanical design lcsh:Materials of engineering and construction. Mechanics of materials General Materials Science Displacement (orthopedic surgery) Fracture Toughness Testing business Tensile testing |
| Zdroj: | Materials Research, Volume: 4, Issue: 3, Pages: 205-209, Published: JUL 2001 SciELO Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP Materials Research, Vol 4, Iss 3, Pp 205-209 (2001) Materials Research v.4 n.3 2001 Materials research (São Carlos. Online) Universidade Federal de São Carlos (UFSCAR) instacron:ABM ABC ABPOL |
| ISSN: | 1516-1439 |
| DOI: | 10.1590/s1516-14392001000300011 |
| Popis: | Made available in DSpace on 2021-07-14T10:28:02Z (GMT). No. of bitstreams: 0 Previous issue date: 2001-07. Added 1 bitstream(s) on 2021-07-14T11:31:00Z : No. of bitstreams: 1 S1516-14392001000300011.pdf: 2371404 bytes, checksum: f5b200a5887eb8eb51c4616978d060e7 (MD5) Fracture toughness testing becomes a very important parameter for mechanical design and maintenance of parts and structures. This work presents the design and construction of a machine device to perform the pre-crack nucleation on SE(B) specimens for fracture toughness testing. Employing this device, it is possible to test materials for K Ic, CTOD and J Ic in a conventional tensile test equipment, assisted by a data acquisition system. The device is based on the concept of loading from an eccentric mechanism, controlling the displacement by means of a marking ring. The main contribution of this work is the low cost technology offered for laboratories, without high priced servo-hydraulic testing machines, giving them autonomy for the execution of fracture toughness tests. The experimental results satisfied the expectation about crack nucleation on SE(B) and applied loading control. Universidade Estadual Paulista, FEG Universidade Estadual Paulista, FEG |
| Databáze: | OpenAIRE |
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