|
Showing 1 - 5 of
5 matches in All Departments
These recommendations present general methods for the assessment of
fatigue damage in welded components, which may affect the limit
states of a structure, such as ultimate limit state and
serviceability limited state. Fatigue resistance data is given for
welded components made of wrought or extruded products of
ferritic/pearlitic or banitic structural steels up to fy = 700 Mpa
and of aluminium alloys commonly used for welded structures.
This book provides a basis for the design and analysis of welded
components that are subjected to fluctuating forces, to avoid
failure by fatigue. It is also a valuable resource for those on
boards or commissions who are establishing fatigue design codes.
For maximum benefit, readers should already have a working
knowledge of the basics of fatigue and fracture mechanics. The
purpose of designing a structure taking into consideration the
limit state for fatigue damage is to ensure that the performance is
satisfactory during the design life and that the survival
probability is acceptable. The latter is achieved by the use of
appropriate partial safety factors. This document has been prepared
as the result of an initiative by Commissions XIII and XV of the
International Institute of Welding (IIW).
This book presents guidelines on quantitative and qualitative
measures of the geometric features and imperfections of welds to
ensure that it meets the fatigue strength requirements laid out in
the recommendations of the IIW (International Institute of
Welding). Welds that satisfy these quality criteria can be assessed
in accordance with existing IIW recommendations based on nominal
stress, structural stress, notch stress or linear fracture
mechanics. Further, the book defines more restrictive acceptance
criteria based on weld geometry features and imperfections with
increased fatigue strength. Fatigue strength for these welds is
defined as S-N curves expressed in terms of nominal applied stress
or hot spot stress. Where appropriate, reference is made to
existing quality systems for welds.In addition to the acceptance
criteria and fatigue assessment curves, the book also provides
guidance on their inspection and quality control. The successful
implementation of these methods depends on adequate training for
operators and inspectors alike. As such, the publication of the
present IIW Recommendations is intended to encourage the production
of appropriate training aids and guidelines for educating, training
and certifying operators and inspectors.
This book presents guidelines on quantitative and qualitative
measures of the geometric features and imperfections of welds to
ensure that it meets the fatigue strength requirements laid out in
the recommendations of the IIW (International Institute of
Welding). Welds that satisfy these quality criteria can be assessed
in accordance with existing IIW recommendations based on nominal
stress, structural stress, notch stress or linear fracture
mechanics. Further, the book defines more restrictive acceptance
criteria based on weld geometry features and imperfections with
increased fatigue strength. Fatigue strength for these welds is
defined as S-N curves expressed in terms of nominal applied stress
or hot spot stress. Where appropriate, reference is made to
existing quality systems for welds.In addition to the acceptance
criteria and fatigue assessment curves, the book also provides
guidance on their inspection and quality control. The successful
implementation of these methods depends on adequate training for
operators and inspectors alike. As such, the publication of the
present IIW Recommendations is intended to encourage the production
of appropriate training aids and guidelines for educating, training
and certifying operators and inspectors.
This book provides a basis for the design and analysis of welded
components that are subjected to fluctuating forces, to avoid
failure by fatigue. It is also a valuable resource for those on
boards or commissions who are establishing fatigue design codes.
For maximum benefit, readers should already have a working
knowledge of the basics of fatigue and fracture mechanics. The
purpose of designing a structure taking into consideration the
limit state for fatigue damage is to ensure that the performance is
satisfactory during the design life and that the survival
probability is acceptable. The latter is achieved by the use of
appropriate partial safety factors. This document has been prepared
as the result of an initiative by Commissions XIII and XV of the
International Institute of Welding (IIW).
|
|