Nachrichten - Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau

Gulliver – A new kind of industrial CT

Thu, 06 Mar 2025 08:42:32 +0100

We are pleased to present our new paper on the Gulliver large scale CT system at ��ֱ�� in Kaiserslautern. In this publication we present some of the measurement results obtained during the current completion of the system. The CT measurements are intended to provide new insights into concrete structures up to 6 m long and rectangular in cross-section with a width and height of 0.3 m at the point of load application. It also outlines future measurement campaigns planned with the system and explains how to access the innovative testing system for your own research activities.

Numerical model validation with computed tomography

Tue, 17 Sep 2024 14:17:29 +0200

In order to make accurate predictions of the structural behaviour of non-metallic reinforced concrete elements, one of the key problems in the development of this type of new material system is the capacity of modelling the load transfer mechanisms between the concrete matrix and the reinforcement elements. To predict the load-deflection response up to ultimate limit state conditions, a wide range of numerical simulation approaches, with capability of modelling the bond behaviour between the different materials has been proposed over the years and compared to experimental results. This research work presents new possibilities for comparing numerical finite elements models with laboratory data generated by computed tomography, namely in the context of three-point bending tests performed on carbon-reinforced concrete specimens. The aim is to present the potential of in situ computed tomography for validation of numerical simulations. Examples of computed tomography generated quantitative results and data visualisation are shown, which focus on generated displacement fields and crack patterns.

Damage analysis in structural engineering

Tue, 17 Sep 2024 14:02:53 +0200

The renovation of existing buildings and infrastructures is becoming in the last years increasingly important. This results in an increasingly greater need to understand the real condition of building components and to objectively measure their level of damage with both qualitative and quantitative indicators. There are many known methods in the field of structural health monitoring and damage control. Among them, non-destructive testing (NDT) methods assume particular importance as they enable the evaluation of structural integrity without compromising functionality. This article explores the potential of non-destructive testing using computed tomography (CT) in the context of damage analysis for concrete structures.