Stochastic Modeling of Thermal Fatigue Crack Growth

Erscheinungsjahr 2014
ISBN: 978-3-319-12876-4
Verlag: Springer

Buch, Englisch, Band 1, 89 Seiten, Format (B × H): 160 mm x 241 mm, Gewicht: 330 g

Reihe: Applied Condition Monitoring

The book describes a systematic stochastic modeling approach for assessing thermal-fatigue crack-growth in mixing tees, based on the power spectral density of temperature fluctuation at the inner pipe surface. It shows the development of a frequency-temperature response function in the framework of single-input, single-output (SISO) methodology from random noise/signal theory under sinusoidal input. The frequency response of stress intensity factor (SIF) is obtained by a polynomial fitting procedure of thermal stress profiles at various instants of time. The method, which takes into account the variability of material properties, and has been implemented in a real-world application, estimates the probabilities of failure by considering a limit state function and Monte Carlo analysis, which are based on the proposed stochastic model. Written in a comprehensive and accessible style, this book presents a new and effective method for assessing thermal fatigue crack, and it is intended as a concise and practice-oriented guide for all undergraduate students, young scientists and researchers dealing with probabilistic assessment of structural integrity.

Zielgruppe

Research

Autoren/Hrsg.

Radu, Vasile

Fachgebiete

• Technische Wissenschaften Maschinenbau | Werkstoffkunde Technische Mechanik | Werkstoffkunde Festigkeitslehre, Belastbarkeit
• Technische Wissenschaften Technik Allgemein Modellierung & Simulation

Inhaltsverzeichnis

Introduction.- Background on stochastic models for cumulative damage process.- Basic mathematical tools for stochastic fatigue analysis.- Stochastic model for thermal fatigue crack growth.- Application.- Conclusions.