Author: Richard E. WhaleyPublisher:
ISBN:
Category : Aluminum
Languages : en
Pages : 30
Book Description
Fatigue-crack Propagation in Aluminum-alloy Tension Panels
Author: Richard E. WhaleyPublisher:
ISBN:
Category : Aluminum
Languages : en
Pages : 30
Book Description
Image Correlation for Shape, Motion and Deformation Measurements
Author: Michael A. SuttonPublisher: Springer Science & Business Media
ISBN: 038778747X
Category : Science
Languages : en
Pages : 332
Book Description
Image Correlation for Shape, Motion and Deformation Measurements provides a comprehensive overview of data extraction through image analysis. Readers will find and in-depth look into various single- and multi-camera models (2D-DIC and 3D-DIC), two- and three-dimensional computer vision, and volumetric digital image correlation (VDIC). Fundamentals of accurate image matching are described, along with presentations of both new methods for quantitative error estimates in correlation-based motion measurements, and the effect of out-of-plane motion on 2D measurements. Thorough appendices offer descriptions of continuum mechanics formulations, methods for local surface strain estimation and non-linear optimization, as well as terminology in statistics and probability. With equal treatment of computer vision fundamentals and techniques for practical applications, this volume is both a reference for academic and industry-based researchers and engineers, as well as a valuable companion text for appropriate vision-based educational offerings.
Damage Tolerance in Aircraft Structures
Author: American Society for Testing and MaterialsPublisher: ASTM International
ISBN:
Category : Airframes
Languages : en
Pages : 260
Book Description
Crack Propagation
Author: United States. Federal Aviation Agency. Administrative Services Division. Library BranchPublisher:
ISBN:
Category : Metals
Languages : en
Pages : 66
Book Description
NASA Technical Note
Author: Advances in the Bonded Composite Repair of Metallic Aircraft Structure
Author: A.A. BakerPublisher: Elsevier
ISBN: 0080522955
Category : Technology & Engineering
Languages : en
Pages : 561
Book Description
The availability of efficient and cost-effective technologies to repair or extend the life of aging military airframes is becoming a critical requirement in most countries around the world, as new aircraft becoming prohibitively expensive and defence budgets shrink. To a lesser extent a similar situation is arising with civil aircraft, with falling revenues and the high cost of replacement aircraft.This book looks at repair/reinforcement technology, which is based on the use of adhesively bonded fibre composite patches or doublers and can provide cost-effective life extension in many situations. From the scientific and engineering viewpoint, whilst simple in concept, this technology can be quite challenging particularly when used to repair primary structure. This is due to it being based on interrelated inputs from the fields of aircraft design, solid mechanics, fibre composites, structural adhesive bonding, fracture mechanics and metal fatigue. The technologies of non-destructive inspection (NDI) and, more recently smart materials, are also included. Operational issues are equally critical, including airworthiness certification, application technology (including health and safety issues), and training.Including contributions from leading experts in Canada, UK, USA and Australia, this book discusses most of these issues and the latest developments. Most importantly, it contains real histories of application of this technology to both military and civil aircraft.
Stress-intensity Factor for a Cracked Sheet with Riveted and Uniformly Spaced Stringers
Author: Publisher:
ISBN:
Category : Fasteners
Languages : en
Pages : 66
Book Description
The stress-intensity factor and forces in the most highly loaded rivet and stringer were calculated for a cracked sheet with riveted and uniformly spaced stringers. Two symmetrical cases of crack location were considered - the case of a crack extending equally on both sides of a stringer and the case of a crack extending equally on both sides of a point midway between two stringers. The complete results are presented on design graphs for systematic variations of crack lengths much less than the stringer spacing. Also, the forces in the most highly loaded stringer and rivet asymptotically approach limiting values for increasing crack length. The stress-intensity factor and the limiting values of the stringer and rivet forces are smaller for stiffer or more closely spaced stringers or for more closely spaced rivets.
Applied Mechanics Reviews
Author: Scientific and Technical Aerospace Reports
Author: Handbook of Structural Life Assessment
Author: Raouf A. IbrahimPublisher: John Wiley & Sons
ISBN: 1119135494
Category : Technology & Engineering
Languages : en
Pages : 1016
Book Description
This important, self-contained reference deals with structural life assessment (SLA) and structural health monitoring (SHM) in a combined form. SLA periodically evaluates the state and condition of a structural system and provides recommendations for possible maintenance actions or the end of structural service life. It is a diversified field and relies on the theories of fracture mechanics, fatigue damage process, and reliability theory. For common structures, their life assessment is not only governed by the theory of fracture mechanics and fatigue damage process, but by other factors such as corrosion, grounding, and sudden collision. On the other hand, SHM deals with the detection, prediction, and location of crack development online. Both SLA and SHM are combined in a unified and coherent treatment.