Guide For Recommended Practices To Perform Crack Tip Opening Displacement Tests In High Strength Low Alloy Steels

Fracture mechanics approach is important for all mechanical and civil projects that might involve cracks in metallic materials, and especially for those using welding as a structural joining process. This methodology can enhance not only the design but also the service life of the structures being constructed. This paper includes detailed consideration of several practical issues related to the experimental procedures to assess the fracture toughness in high strength low alloy steels (HSLA) using the crack tip opening displacement (CTOD) parameter, specifically pipeline steels for oil and gas transportation. These considerations are important for engineers who are new in the field, or for those looking for guidelines performing different procedures during the experimentation, which usually are difficult to understand from the conventional standards. We discuss on topics including geometry selection, number of replicate tests, fatigue precracking, test procedure selection and realization, reports of results and other aspects.213290302Colciencias [512]PetrobrasLNNano/CNPE

Curso semipresencial promove reflexão sobre a prática no ensino de álgebra

Este artigo tem origem na satisfação do grupo de Álgebra, do Setor Matemática, do Projeto Fundão, ao terminar duas edições de um curso semipresencial sobre ensino de Álgebra para professores e futuros professores do Estado do Rio de Janeiro. Durante três anos, o grupo realizou um estudo sobre o desenvolvimento do pensamento algébrico que teve como resul-tado a publicação de um livro, em 2008, para servir de subsídio a professores interessados em inovar sua prática nas aulas de Álgebra, do 6º ano do ano, do Ensino Fundamental ao 3º ano do Ensino Médio. Como o conhecimento pedagógico do conteúdo (Shulman, 1986) desenvolvido ao longo do trabalho foi rico e significativo, o grupo resolveu compartilhá-lo com outros professores, por meio do curso. O seu sucesso em 2010fez com que o repetísse-mos, em 2011, para outros professores. Registramos aqui as ideias fundamentais sobre as quais giraram as reflexões do curso e observações, considerações e constatações possíveis a partir dele

Sports and Exercise Therapists – working across the physical activity spectrum

There is a growing recognition of the impact of musculoskeletal (MSK) conditions on people, employers, the health service and the economy. MSK conditions are now recognised as one of six major health disorders contributing to the burden of disease in England.1 Interestingly, the Government in England is looking to resource MSK provisions via leisure and community settings, with an initiative using MSK Hubs.2 It is an innovative idea but raises questions such as: Where will the workforce come from, and which practitioners have the expertise to deal with the prevention, treatment and rehabilitation of MSK conditions within a multidisciplinary team? With the mounting importance of high-quality MSK care to ease the burden on society, keeping as many people as possible physically active, Sports and Exercise Therapists can provide the solution

Sports and Exercise Therapists – working across the physical activity spectrum (Editorial)

There is a growing recognition of the impact of musculoskeletal (MSK) conditions on people, employers, the health service and the economy. MSK conditions are now recognised as one of six major health disorders contributing to the burden of disease in England.1 Interestingly, the Government in England is looking to resource MSK provisions via leisure and community settings, with an initiative using MSK Hubs.2 It is an innovative idea but raises questions such as: Where will the workforce come from, and which practitioners have the expertise to deal with the prevention, treatment and rehabilitation of MSK conditions within a multidisciplinary team? With the mounting importance of high-quality MSK care to ease the burden on society, keeping as many people as possible physically active, Sports and Exercise Therapists can provide the solution. In this special edition, we highlight MSK research that Members of The Society of Sports Therapists (The SST) may face with their patients, within their local communities or with sports teams with whom they work. This may be through supporting patients by improving long-term prognosis and self-management strategies of injuries ( see page 884 ), and consideration of biomechanical interventions that may alter joint loading ( see page 872 ). Sport and Exercise Therapist’s understanding continues to develop regarding the role of technology within knowledge translation ( see page 833 ), the promotion of physical activity during a global pandemic ( see page 877 ), and with ongoing comprehension of the longitudinal health and injury surveillance studies within sport ( see page 836 ). Sports and Exercise Therapists must be versatile in their approach maintaining up-to-date evidence-informed practice. Since its formation in 1990, The SST has demonstrated continual development of a workforce that tackles MSK conditions across the physical activity spectrum. This can be evidenced through the ongoing collaborations and employment opportunities with the Ministry of Defence, Private Healthcare providers and National Health Service Trusts. Such abilities and skills to work within these environments to ensure optimum MSK care are underpinned by the five pillars of competencies: Prevention of Injury; Recognition and Evaluation of Injury; Management, Treatment and Referral; Rehabilitation; and Education and Professional Practice Issues. Active collaborations with organisations, such as the Arthritis and Musculoskeletal Alliance and the Community Rehabilitation Alliance, have also supported the development and improvement of MSK therapy and fitness-related services. Through our conversations, and considering existing research, it is apparent that there is also a need to address health inequalities for marginalised groups across the physical activity spectrum, and work towards equitable access to, and outcomes from, multidisciplinary MSK services. With an increasing membership and collaborations with 32 institutions running undergraduate and/or master’s degree courses, it is evident that The SST has a clear role in bridging the gap. Considering the current landscape, The SST has recently introduced a national mentorship scheme and an advisory group. The national mentorship scheme is specifically aimed at improving and supporting diversity within the profession. The pioneering Network for Engagement in Equity, Diversity and Social-Structural Strategy group aims to educate and promote social justice and equity within The SST, and across its membership and stakeholders. As the recognition for the skills and competencies of Sports and Exercise Therapists continues to grow within wider healthcare settings, and while MSK health issues continue to increase, The SST will undoubtedly see more opportunities to support and service the wider population both independently and as part of a wider multidisciplinary team

Fracture Toughness Assessment At Different Temperatures And Regions Within A Friction Stirred Api 5l X80 Steel Welded Plates

Friction stir welding (FSW) is a promising candidate for use in pipeline steels because it offers high productivity and sound welded joints. This study presents a fracture toughness assessment of FSW-welded two-pass butt joints, different regions within the joints and tests temperatures (25 degrees C, -15 degrees C, -20 degrees C, -35 degrees C, -40 degrees C) were used. Base plates of API-X80 steel 12 mm thick were FSW-welded using two different pass sequences, coincident and alternate directions. The results presented consistently high toughness values down to -20 degrees C for all the assessed notches, which indicates that FSW may be suitable for general pipelines steels applications in that range of temperatures. (C) 2015 Elsevier Ltd. All rights reserved.147176186COLCIENCIAS [512]Petrobra