研究目的
Investigating the in-situ tomographic monitoring of crack formation and propagation in a quasi-brittle silicate matrix composite subjected to three point bending.
研究成果
The application of pixelated photon-counting detectors with fast read-out into laboratory systems with commercial X-Ray tubes enables acquisition speeds comparable to that obtained with synchrotrons. A novel approach for the beam hardening correction of the acquired images, using a sliding window algorithm, was successfully applied. The instrumentation and methods were demonstrated while observing a quick process of crack initiation and propagation in a quasi-brittle material.
研究不足
The study was limited by the time-dependent changing of the CdTe pixelated detectors' response and the relatively low resolution obtained, making microcracks hard to visualize.
1：Experimental Design and Method Selection:
The study utilized a patented modular tomographic system TORATOM for in-situ tomographic monitoring. A CdTe pixelated detector was used for fast readout.
2：Sample Selection and Data Sources:
A block-shaped specimen made of a perlite filler-based material was used.
3：List of Experimental Equipment and Materials:
The equipment included a TORATOM system, a WidePIX 1 × 5 imaging detector with a CdTe sensor, and a custom-built table-top loading device.
4：Experimental Procedures and Operational Workflow:
The specimen was subjected to a three point bending test at a constant loading rate, with tomographic data recorded during continuous rotation of the tomographic stage.
5：Data Analysis Methods:
The data were processed using a sliding window beam hardening correction method and reconstructed using the standard filtered back projection algorithm.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
