Battle damage repair of a helicopter composite main rotor blade

Chiu, Wing Kong; Zhou, Zhong Qing; Wang, John; Baker, A.A.

doi:10.1016/j.compositesb.2011.07.014

Cited by 12 publications

(5 citation statements)

References 2 publications

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“…On the other hand, the external patch repair is a relatively simple and cost effective technique. Thus, the external patch repair finds its application in many fields such as pipeline repair, 12 repair of thin laminates, 13 aircraft repair, 14 etc.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on compressive behaviour of different patch–parent layup configurations for repaired carbon/epoxy composites

Bhatia

Andrew

Arockiarajan

2019

Journal of Composite Materials

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This work presents a comparison of various combinations of patch and parent laminates with different orientations and stacking sequence, on the performance of adhesively bonded external patch-repaired carbon/epoxy laminates under quasi-static compressive loading. The compressive behaviour and failure modes of pristine, damaged and repaired specimens of four different parent laminates ([0]6, [45]6, [0/45/45]s, [45/45/0]s) are discussed. The repair of each parent laminate is carried out by bonding patches of four configurations ([0]2, [45]2, [45/0], [0/45]) having two plies on each side of the parent laminates. Real-time digital image correlation technique was employed to capture the development of the strain field with the increasing load. The results reveal the development of distinctive strain contours associated with different patch–parent configurations. The inspection of damaged specimens revealed the fiber micro-buckling as the dominant mode of failure. The orientation of plies influences the overall failure mode of the laminates. The clustering of 0° plies results in laminate possessing higher strength. The less stiff [45]2 patch shows higher compliance with the increasing load.

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Section: Introductionmentioning

confidence: 99%

Experimental investigation on compressive behaviour of different patch–parent layup configurations for repaired carbon/epoxy composites

Bhatia

Andrew

Arockiarajan

2019

Journal of Composite Materials

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“…A strong correlation can be noticed between the spherulite size and crystallization half-time (T 1/2 ) measured using DSC. Chiu et al 42 observed a similar reduction of the spherulitic dimension in the case of sPS/multi-walled carbon nanotube nanocomposites. It is apparent from the POM studies that the delaminated SF-LDH particles act as nucleating sites in the sPS matrix, and the fine dispersion of these particles can significantly influence the molecular arrangement of sPS in its crystalline structure.…”

Section: -22mentioning

confidence: 97%

Structure and crystallization behaviour of syndiotactic polystyrene/layered double hydroxide nanocomposites

Nagendra

Das

Leuteritz

et al. 2016

Polymer International

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“…Accelerated reliability testing is used in electronics, (resistors, lasers, displays, electronic bounds, circuit breakers, relays, cells and batteries) in the study of metals and composite materials [7], but also for certain components [8] and mechanical assemblies (automobile parts, hydraulic components, bearings) [9], renewable energy (wind turbine blades) [10 ÷ 13]. In aerospace industry, the accelerated reliability testing is used to test certain components: the engine, the oil pumps, on board electronic equipment [14] and stiffening componentsspar wing [15].…”

Section: Figure 1 the Classification Of Reliabilitymentioning

confidence: 99%

Management of accelerated reliability testing

Zaharia

Martinescu

2016

Teh. vjesn.

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Original scientific paper The concept of management is found in every activity from the program of accelerated reliability tests for industrial products, starting from the planning, the realization and the statistical processing of the results. Accelerated Reliability Testing (ART) is an experiment in which: the physics of degradation mechanism is similar to the mechanism in the real operation using given criteria; the measurement of reliability has a high correlation with these respective measurements in the real operation using given criteria. An ART is an aging degradation of industrial products to produce normal failure by operating at stress levels much higher than would be expected in normal use. Taking into account the aspects regarding the statistical processing of experimental data, we determined the main reliability parameters, which in turn determine the main characteristics regarding the performance and the warranty period of the product. Keywords: ART; life cycle; reliability management; statistical processing Upravljanje ubrzanim ispitivanjem pouzdanostiIzvorni znanstveni članak Pojam upravljanja nalazi se u svakoj aktivnosti iz programa ubrzanog ispitivanja pouzdanosti za industrijske proizvode, počevši od planiranja, realizacije i statističke obrade podataka. Ubrzano ispitivanje pouzdanosti (Accelerated Reliability Testing -ART) je eksperiment u kojemu: fizika mehanizma degradacije slična je mehanizmu u stvarnom radu uz primjenu danih kriterija; mjerenje pouzdanosti u velikoj je korelaciji s takvim mjerenjima u stvarnom radu uz primjenu danih kriterija. ART je degradacija industrijskih proizvoda zbog starenja koja dovodi do normalnog kvara kod rada na razinama naprezanja mnogo višim nego što bi se pri normalnoj uporabi moglo očekivati. Uzimajući u obzir aspekte u odnosu na statističku obradu eksperimentalnih podataka, odredili smo glavne parametre pouzdanosti, koji zatim određuju glavne karakteristike u odnosu na performansu i vrijeme proizvoda pod garancijom.Ključne riječi: statistička obrada; ubrzano ispitivanje pouzdanosti; upravljanje pouzdanošću; životni krug

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Battle damage repair of a helicopter composite main rotor blade

Cited by 12 publications

References 2 publications

Experimental investigation on compressive behaviour of different patch–parent layup configurations for repaired carbon/epoxy composites

Experimental investigation on compressive behaviour of different patch–parent layup configurations for repaired carbon/epoxy composites

Structure and crystallization behaviour of syndiotactic polystyrene/layered double hydroxide nanocomposites

Management of accelerated reliability testing

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