Mechanical characterization of metal-ceramic composites
Journal Title: Frattura ed Integrità Strutturale - Year 2009, Vol 3, Issue 10
Abstract
Metal-ceramic composites represent a class of quasi-brittle materials for advanced structural applications that require adequate mechanical characterization. Difficulties and costs associated with material production and specimen extraction prevent the execution of a statistically meaningful number of standard laboratory tests. Parameter calibration methodologies based on instrumented indentation and inverse analysis represent fast and reliable identification procedures in the present context, as shown by the present contribution, based on some experience achieved in the framework of the European Network of Excellence on ‘Knowledge-based Multi-component Materials for durable and safe performance’ (KMM-NoE).
Authors and Affiliations
G. Bolzon, M. Bocciarelli, E. J. Chiarullo
Subsurface metals fatigue cracking without and with crack tip
Very-High-Cycle-Fatigue regime for metals was considered and mechanisms of the subsurface crack origination were introduced. In many metals first step of crack origination takes place with specific area formation b...
Fatigue properties and fracture mechanism of load carrying type fillet joints with one-sided welding
The structures of the hydraulic excavator and the crane have numerous one-sided welded joints. However, attachments with box like structures are difficult to weld at both sides. Therefore, high accurate evalu...
Near tip strain evolution of a growing fatigue crack
Near tip full-field strains in a growing fatigue crack have been studied in situ using the Digital Image Correlation (DIC) technique in a compact tension specimen of stainless steel 316L under tension-tension cycl...
A new formulation for estimating maximum stress intensity factor atthe mid plane of a SENB specimen: Study based on 3D FEA
In this investigation, three-dimensional elastic finite element analyses have been conducted tocompute the stress intensity factor (KI) in a SENB specimen with varied thickness (B) and crack-length to widthratio (a...
Use of a gray level co-occurrence matrix to characterize duplex stainless steel phases microstructure
Duplex stainless steels are widely used in industry. This is due to their higher strength compared to austenitic steels and to their higher toughness than ferritic steels. They also have good weldability and high resista...