By Wieslaw Staszewski, C. Boller, G. R. Tomlinson
Supplying caliber examine for the reader, this identify encompasses all of the contemporary advancements in clever sensor know-how for future health tracking in aerospace constructions, delivering a invaluable advent to break detection innovations. Focussing on engineering purposes, all chapters are written via shrewdpermanent buildings and fabrics specialists from aerospace brands and research/academic associations.
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Extra resources for Health Monitoring of Aerospace Structures: Smart Sensor Technologies and Signal Processing
Example text
The aerospace industries were taught the second major lesson of fatigue behaviour in another accident involving the Boeing 737-200 aircraft operated by Aloha Airlines on Hawaii in 1988. The multisite fatigue cracking in the upper crown skin of the fuselage which resulted from the aircraft’s age (80 029 flights) combined with operation mainly on runways next to the sea and thus corrosive atmosphere, led to the explosive cabin decompression. Mysterious piloting skills allowed the aircraft still to be landed and the short flight time with passengers having all seat belts on luckily reduced the number of fatalities to one.
Manufacturing departments will be closely involved with formulating and agreeing the Manufacturing Process Specification. Each discipline will define the test requirements for delivering its own qualification evidence deliverables according to that discipline’s local procedure(s). The lead test discipline will then be responsible for combining each of these test requirements into an overall test requirement and for managing the actual test. By using each discipline’s local TECHNOLOGY QUALIFICATION 19 procedures to define the test requirements and to present the results, the validity of test results, as qualification evidence will not be questioned, even if the test is multidisciplined in nature.
When an established NDT method is applied to a part, a structurally representative reference specimen containing artificial defects is used to confirm that the NDT method can reliably detect the minimum significant defect size. The use of a reference specimen formally calibrates the NDT method and guarantees reliability. Where a number of similar parts require NDT inspection, a Technical Sheet is written to describe the process and the appropriate reference specimens. If a new NDT method became available and the type(s) of defect(s) to be measured were already subject to existing qualified NDT methods, then the relevant existing reference specimens could be used in its qualification.
