This study investigates the effect of inclusion size on drying shrinkage cracking in cementitious materials. A series laboratory desiccation tests concrete with different inclusions are conducted. Nondestructive X-ray micro-tomography images were used to reconstruct drying-induced cracks samples tests. To better understand mechanism cracking, a fully coupled hydro-mechanical bond-based Peridyna...

Aluminium foam sandwich structures have excellent energy absorption capacity, combined with good mechanical properties and low density. Some of the authors this paper proposed an innovative Metallic Foam Shell protective device against flying ballast impact damage in railway axles. A closed-cell aluminium was chosen for device. The main goal study experimental investigation responses panels. Lo...

Two nondestructive electromagnetic/magnetic techniques including hysteresis loop and eddy current methodologies have been used to characterize microstructural changes of AISI D2 cold work tool steel as a result of quench and tempering treatments. To measure the fraction retained austenite in quenched microstructure, six specimens were austenitized in the range  of 1000-1130 °C. Samples austenit...

an important issue in power generation and petrochemical industries is the monitoring of pipe wall thickness and corrosion/erosion rate. the pipes are usually subject to erosive and/or corrosive environments and any failure could be catastrophic. while periodic manual ultrasonic thickness measurement is the common practice in many industries, in certain cases, where higher accuracies are requir...

The reliability and operational safety of an aircraft engine gas turbine are extremely important in terms its operation. In the course operation, these turbines undergo complex thermal, mechanical, aerodynamic, chemical exhaust loads. Due to such a load, particularly acting upon rotor blades, they various damages. Therefore, maintenance processes continuously strive for enhancing diagnostic met...

The practical limits on resolution of images from seismic or radar (electromagnetic) data depend on the spectrum of the source pulse, the incompleteness of the recording geometry, and the fidelity with which one can model the reference medium. These factors together prevent one from recovering a point image from data produced by a point diffractor in a given body. A simple imaging formula quant...

Control by eddy current is one of techniques that’s very used in nondestructive evaluation of materials. These processes find an application significant in the determination of the mechanical and metallurgical parameters of materials. The object of this work is to carry out an analysis of the residual stresses in the material created by external solicitations and analysed by eddy currents as a ...

The mechanical properties of wrought iron from multiple elements of six late 19th-century truss bridges is evaluated by a program of destructive and nondestructive testing, including hardness testing and tension tests to evaluate the yield stress (Fy), tensile strength (Fu), and ductility of the material. The yield stress and tensile strengths are found to be in accordance with those published ...