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Fatigue crack detection on structural steel members by using ultrasound excited thermography = Erkennung von Ermüdungsrissen in Stahlbauteilen durch ultraschallangeregte Thermografie

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Book Series: Berichte zum Stahl- und Leichtbau / Karlsruher Institut für Technologie, Versuchsanstalt für Stahl, Holz und Steine, Stahl- und Leichtbau ISSN: 21987912 ISBN: 9783731504177 Year: Volume: 3 Pages: XVI, 334 p. DOI: 10.5445/KSP/1000048191 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-30 19:59:17
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Abstract

Ultrasound excitation of structural steel members leads to localised energy dissipation at existent fatigue cracks and thus allows for thermographic flaw detection. Essential effects on the defect-selective heating, such as flaw size, plate thickness, crack mouth opening or static preload, are systematically investigated. Laser vibrometry measurements of the crack edges, theoretical modelling of frictional heating and numerical simulations contribute to the understanding of the involved physics.

Responsive Architecture

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ISBN: 9783039216987 9783039216994 Year: Pages: 204 DOI: 10.3390/books978-3-03921-699-4 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Arts in general --- Architecture
Added to DOAB on : 2019-12-09 11:49:16
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Abstract

This book is a collection of articles that have been published in the Special Issue “Responsive Architecture” of the MDPI journal Buildings. The eleven articles within cover various areas of sensitive architecture, including the design of packaging structures reacting to supporting components; structural efficiency of bent columns in indigenous houses; roof forms responsive to buildings depending on their resiliently transformed steel shell parts; creative design of building free shapes covered with transformed shells; artistic structural concepts of the architect and civil engineer; digitally designed airport terminal using wind analysis; rationalized shaping of sensitive curvilinear steel construction; interactive stories of responsive architecture; transformed shell roof constructions as the main determinant in the creative shaping of buildings without shapes that are sensitive to man-made and natural environments; thermally sensitive performances of a special shielding envelope on balconies; quantification of generality and adaptability of building layout using the SAGA method; and influence of initial conditions on the simulation of the transient temperature field inside a wall.

Keywords

bent piles --- structural systems --- vernacular houses --- Ammatoan houses --- building structure --- effectivity --- strength --- corrugated shell roof --- free-form building --- architectural form --- folded sheet --- thin-walled profile --- shape transformation --- steel construction --- building free-form structure --- corrugated shell roof --- architectural form --- thin-walled open profile --- shape transformation --- folded sheet --- steel construction --- performance-oriented design --- parametric architecture --- form-finding --- CFD --- wind analysis --- digital tools --- steel bar structures --- structural analysis --- parametric design --- algorithmic-aided shaping --- responsive architecture --- shadows --- Grasshopper --- Karamba 3D --- interactive architecture --- interaction narrative --- user experience --- situatedness --- agent-based theory --- building free form structure --- corrugated shell roof --- integrated architectural form --- thin-walled open profile --- shape transformation --- folded sheet --- adaptive envelope --- thermal performances --- spanish balcony --- simulation and computational design studies --- responsive architecture --- kinetic envelope --- adaptive design --- interactive architecture --- moveable facade components --- carrier component structures --- sensor interaction --- digital fabrication --- adaptability --- generality --- flexibility --- evaluation tool --- network analysis --- Space Syntax --- justified plan graphs --- spatial analysis --- architectural morphology --- space plan --- boundary conditions for simulation --- initial conditions --- thermal conditions --- heat flow --- numerical analysis --- experimental measurement --- outdoor test cells

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