A comprehensive guide to avoiding hydrogen cracking which serves as an essential problem-solver for anyone involved in the welding of ferritic steels. The authors provide a lucid and thorough explanation of the theoretical background to the subject but the main emphasis throughout is firmly on practice.
Contents
Defining the problem
- Hydrogen-induced cracking in welds
- Factors responsible for cracking and their control
- Detection and identification
Guidance on safe welding procedures by graphical methods
- Low hardenability steels
- High hardenability steels
- The choice of method
- Joint simulation testing
Selecting values for graphical presentation
- Chemical composition
- Carbon equivalent level
- Precision of the CE formulae
- Effects of sulphur
- Welding dissimilar metals
- Hydrogen potential of the consumable
- Selection of carbon equivalent axis
- Combined thickness of the joint
- Heat input
- Preheat and interpass temperature
- Postheat
- Fit-up
- Misalignment
- Multirun welds
- Tack welds
Welding procedures for different steel types
- Mild steel
- Carbon manganese steels
- Lower carbon, lean alloy steels
- Medium carbon and carbon-manganese steels
- Alloy steels
- High carbon, plain and alloy steels
- Machinable grades of steel
Removing hydrogen during welding and heat treatment
- Construction of hydrogen removal curves
- Simplification of weld joint geometry
- Material thickness
- Heat treatment temperature and choice of the valve for D
- Choice of value for total original hydrogen level
- Use of hydrogen removal curves in practice
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Joachim Roesler, Harald Harders, Martin Baeker, "Mechanical Behaviour of Engineering Materials: Metals, Ceramics, Polymers, and Composites"
Springer | 2007-11-14 | ISBN-10: 3540734465 | 536 pages | PDF | 10,7 Mb
How do engineering materials deform when bearing mechanical loads? To answer this crucial question, the book bridges the gap between continuum mechanics and materials science. The different kinds of material deformation (elasticity, plasticity, fracture, creep, fatigue) are explained in detail. The book also discusses the physical processes occurring during the deformation of all classes of engineering materials (metals, ceramics, polymers, and composites) and shows how these materials can be strengthened to meet the design requirements. It provides the knowledge needed in selecting the appropriate engineering material for a certain design problem. The reader will thus learn how to critically employ design rules and thus to avoid failure of mechanical components.
‘Mechanical Behaviour of Engineering Materials’ is both a valuable textbook and a useful reference for graduate students and practising engineers.
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Code of Practice for Project Management for Construction and Development
Code of Practice for Project Management for Construction and Development
240 pages
Wiley-Blackwell; 3 edition (November 8, 2002)
1405103094
PDF 1 Mb
In 1991 the Chartered Institute of Building initiated a multi-institute task force and a Code of Practice for Project Management was published in 1992, with a second edition in 1996. Like previous editions, this third edition has been substantially revised to embody the results of intensive consultation between the CIOB and representatives of the professional bodies concerned with construction and development.
The Code is divided into two sections:
the first covers eight stages associated with projects from inception to completion, each one well supported with diagrams, flowcharts and checklists
the second section contains a project handbook, complete with guidance documentation and checklists.
The third edition features new guidance on:
project planning
EU procurement procedures
performance management plan
partnering
project risk assessment
environmental impact assessment
procurement options and
value for money framework.
Effective project management involves the assessment and management of risk, and this is a strong theme throughout the Code.
The Code of Practice provides an authoritative guide to the principles and practice of construction project management. It will be a key reference source for clients, contractors and professionals, irrespective of the size and nature of the project. Much of the information is also relevant to project managers in other commercial spheres.
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SUSTAINABLE BUILDING DESIGN BOOK.
The 2005 World Sustainable Building Conference in Tokyo, Student Session 23-29 September 2005, Tokyo, Japan
Printed in Japan 2005
100 page- PDF
9.88 mb
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A document on DESIGN AND DETAILING OF MOVEMENT JOINTS.
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Describing the different variables involved in arc welding and how they interact, this state-of-the-art reference examines the welding capabilities of mechanized, automatic, adaptive control, and robotic systems. Delineating the advantages of welding automation and offering practical strategies for its implementation, Arc Welding Automation analyzes the necessary components for various types of automated welding suggests which arc-welding automatic machines are most appropriate for particular types of manufacturing discusses automatic welding equipment for high-volume production of like parts elucidates the design of automatic welding fixtures considers specific welding attachments for robots and more!
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The Orphan Tsunami of 1700: Japanese Clues to a Parent Earthquake in North America
The Orphan Tsunami of 1700: Japanese Clues to a Parent Earthquake in North America
Brian F. Atwater,
University of Washington Press / U.S. Geological Survey
2005-12-30
ISBN: 0295985356
133 pages
PDF 73,2 MB
The outside world scarcely knew of northwestern North America in the year 1700. The Pacific coast, from southcentral Alaska to Oregon's Cape Blanco, was uncharted until the Spanish and English explorations of the 1770s. Yet, when tectonic plates suddenly shifted there in 1700, a train of ocean waves -- a tsunami -- sped across the Pacific Ocean. When the waves came ashore in Japan, they flooded fields and washed away houses. Samurai, merchants, and villagers recorded the mysterious event, but they observed no storm and felt no parent earthquake. In Japan, this tsunami was an orphan.
The Orphan Tsunami of 1700 tells this transpacific detective story by presenting its primary sources, Japanese documents and North American sediments and tree rings. They tell of a catastrophe a century before Lewis and Clark's expedition that now guides preparations for future earthquakes and tsunamis in the North Pacific.
A rich array of graphic detail and narrative explains the creation, action, and lasting effects of earthquakes and tsunamis.
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Seismic Behavior of Steel Buildings with Combined Rigid and Semi-Rigid Frames
Research
Dr. Shen's expertise and research interests are in the areas of inelastic behavior of steel structures and earthquake engineering, including cyclic behavior and earthquake-resistant design of steel structures, wind and earthquake induced dynamic problems in structures, and seismic retrofit. His current research includes model-based simulations of large-scale structures; application of imaging technology in structural engineering collapse and failure of structures under natural and man-made disasters; performance-based design of steel structures using energy approach; and seismic study of semi-rigid steel frames. Current projects under study include: (1) Performance-based seismic design of concentrically and eccentrically braced frames; (2) Seismic study of deep column steel moment frames using model-based simulation; (3) Seismic design of steel column base plates; (4) Pushover study of building frames; (5) Inelastic behavior of lateral-torsional buckling; (6) Structural heath monitoring of building structures; and (7) Tension-compression balanced steel braced frames. Dr. Shen is a member of EERI, AISC and ASCE.
connections in steel structures
adapted from Shen, J., Steel Structures, Class Notes, IIT, Fall 2009
will be available soon
regards
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