نتایج جستجو برای: fatigue life etc

تعداد نتایج: 919570  

Sabokrouh , M. ,

In this article the effects of carburizing heat treatment on girth weld with containing titanium oxide and titanium carbide nanoparticles (X-65 grade of gas pipeline) is evaluated. The charpy results show that in the carburized sample containing titanium oxide and titanium carbide nanoparticles compared to the no heat treatment sample (containing titanium carbide and titanium carbide nanopartic...

Sabokrouh , M. ,

In this article the effects of carburizing heat treatment on girth weld with containing titanium oxide and titanium carbide nanoparticles (X-65 grade of gas pipeline) is evaluated. The charpy results show that in the carburized sample containing titanium oxide and titanium carbide nanoparticles compared to the no heat treatment sample (containing titanium carbide and titanium carbide nanopartic...

Journal: :J. Applied Mathematics 2012
José Renato M. de Sousa Fernando Jorge M. de Sousa Marcos Q. de Siqueira Luís Volnei S. Sagrilo Carlos Alberto D. de Lemos

This paper focuses on a theoretical approach to access the fatigue life of flexible pipes. This methodology employs functions that convert forces and moments obtained in time-domain global analyses into stresses in their tensile armors. The stresses are then processed by well-known cycle counting methods, and S-N curves are used to evaluate the fatigue damage at several points in the pipe’s cro...

Background & Aims of the Study: Fatigue is one of the most important issues relating with safety and other aspects of human life. To understand fatigue and its relative factors and causes, there is a need to useful instruments, such as self-reported scales. The purpose of this study is to identify and present useful self-reported scales to measure fatigue. Materials & Methods: Data were extrac...

Journal: :European journal of neurology 2008
E Havlikova J Rosenberger I Nagyova B Middel T Dubayova Z Gdovinova J P van Dijk J W Groothoff

BACKGROUND AND PURPOSE Fatigue is frequent and important in the lives of Parkinson's disease (PD) patients. It is multidimensional, with physical and mental aspects. The aim of our study was to explore the impact of fatigue on quality of life (QoL) for PD patients. METHODS The sample consisted of 175 PD patients from Eastern Slovakia (52% males, mean age 68.2 +/- 9.2, mean disease duration 7....

2012
Gurbir Kaur

Based upon the statistical distribution of flexural fatigue life data and flexural fatigue strength of the steel fibre reinforced concrete (SFRC) containing blends of limestone powder (LP) and silica fume (SF), the influence of these inserts on the flexural fatigue performance of concretes is probed. Concrete mixes were proportioned to replace 30% cement with these mineral inserts in different ...

2002
Bruce Birch

Evidence suggests that in Iwaija, a non-Pama-Nyungan language of northern Australia, the Intonation Phrase (IP) is an integrated entity, one which is typical of a cursus language (Pulgram,1970) like French, in which words in connected speech give up some of the properties they exhibit in isolation. A salient feature of the prosody of this language is syllabification across content word boundari...

2015
J M. Larson S K. Jha C J. Szczepanski M J. Caton J R. Jira

In probabilistic design of materials for fracture-critical components in modern military turbine engines, a typical maximum design target risk (DTR) is 5 10 8 component failures/engine flight hour. This metric underscores the essential role of safety in a design process that simultaneously strives to achieve performance, efficiency, reliability, and affordability throughout the life cycle of th...

2018
Juan J Fernández-Muñoz Margarita Cigarán-Méndez Esperanza Navarro-Pardo Marta Pérez-de-Heredia-Torres Paula Parás-Bravo César Fernández-de-las-Peñas

OBJECTIVES To determine the mediating effects of depression on health-related quality of life and fatigue in individuals with multiple sclerosis (MS). DESIGN A cross-sectional study. SETTING Tertiary urban hospital. PARTICIPANTS One hundred and eight patients (54% women) with MS participated in this study. OUTCOME MEASURES Demographic and clinical data (weight, height, medication and ne...

Journal: :Journal of pediatric psychology 2013
I-Chan Huang Mary Anderson Pranav Gandhi Sanjeev Tuli Kevin Krull Jin-Shei Lai John Nackashi Elizabeth Shenkman

OBJECTIVE To examine the relationships among pediatric fatigue, health-related quality of life (HRQOL), and family impact among children with special health care needs (CSHCNs), specifically whether HRQOL mediates the influence of fatigue on family impact. METHODS 266 caregivers of CSHCNs were studied. The Pediatric Quality of Life Inventory Multidimensional Fatigue Scale, Pediatric Quality o...

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