Download or read book Fatigue crack detection on structural steel members by using ultrasound excited thermography Erkennung von Ermuedungsrissen in Stahlbauteilen durch ultraschallangeregte Thermografie written by Plum, Robin Marc and published by KIT Scientific Publishing. This book was released on 2015-08-27 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Consideration of runouts by the evaluation of fatigue experiments written by Toasa Caiza, Paul Dario and published by KIT Scientific Publishing. This book was released on 2019-05-27 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: In EC3, the fatigue life of a steel structure subjected to a cyclic load is estimated by its detail category. This category is based on the S-N, curves which are obtained by applying the Basquin model. Statistically, this model does not allow extrapolating the S-N curves in the HCF region, neither does it consider the runouts. This affects the fatigue life estimation when a structure bears loading in HCF. To overcome these deficiencies, a new method based on a Weibull distribution is applied.

Download or read book Design of Cast Steel Components under Cyclic Loading written by Nagel, Sven and published by KIT Scientific Publishing. This book was released on 2022-05-27 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work presents a design approach that links fatigue resistance of cast steel component to permissible defect sizes. It is based on fractures mechanics, is in line with experiences of the last 60 years and validated by extensive experimental as well as numerical investigations on different scales and under consideration of real casting defects. By following established assessment methods, the design concept is adapted to practical building applications.

Download or read book Fatigue Crack Detection on Structural Steel Members by Using Ultrasound Excited Thermography Erkennung Von Erm dungsrissen in Stahlbauteilen Durch Ultraschallangeregte Thermografie written by Robin Marc Plum and published by . This book was released on 2020-10-09 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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. This work was published by Saint Philip Street Press pursuant to a Creative Commons license permitting commercial use. All rights not granted by the work's license are retained by the author or authors.

Download or read book Analysis of a Rotatable Wind Turbine Tower by means of Aero Servo Elastic Load Simulations written by Struve, Achim and published by KIT Scientific Publishing. This book was released on 2021-04-12 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work highlights how the costs and CO2-emissions of land-based wind turbines can be reduced by means of an innovative and material efficient support structure concept. Thereby the yaw system is placed at the tower base, allowing the whole wind turbine tower to be rotated. The potential of a rotatable inclined lattice tower concept was analysed by means of aero-servo-elastic load simulations in the FAST environment. A balance between different cost aspects revealed significant savings.

Download or read book Finite Element Simulation of Residual Stresses from Welding and High Frequency Hammer Peening written by Gkatzogiannis, Stefanos and published by KIT Scientific Publishing. This book was released on 2022-06-30 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research goal of the present monograph is the establishment of an efficient engineering approach, which will include straightforward but accurate simulation models, in order to estimate the residual stress fields of welded joints introduced during welding and their post-weld treatment with High Frequency Hammer Peening. The present subject lies on the intersection of structural engineering, material science and computational mechanics.