Non-destructive testing of aircraft engine parts made of composite materials. Identifying the limits of acceptable defects


Cite item

Full Text

Abstract

An important engineering challenge of providing the reliability of products made of composite materials (CM) is the identification of dangerous types of defects, their permissible values and developing techniques for their detection. A set of techniques of non-destructive testing (NDT) is presented as applied to the problem of monitoring and identification of the acceptable limits of technological defects of aircraft engine parts made of composite materials. The paper also includes experimental tests aimed at determining the effect of a fiber defect on the mechanical characteristics of a polymer composite material. Joint use of different NDT techniques is necessary for the detection of multiple types of technological defects typical for CMs. Defect detection is an integral part of the processing of composite materials into products. Test samples with artificially damaged fibers show their significant influence on tensile strength characteristics and shear modulus in the plane of the layer. The effect of possible defects on the mechanical characteristics of fiber should be considered when designing CM products.

About the authors

T. D. Karimbayev

Central Institute of Aviation Motors named after Baranov P.I.

Author for correspondence.
Email: karymbayev@ciam.ru

Doctor of Science (Engineering), Professor
Head of Department

Russian Federation

D. S. Palchikov

Central Institute of Aviation Motors named after Baranov P.I.

Email: palchikov@rtc.ciam

Engineer

Russian Federation

References

  1. Yermolov I.N., Lange Yu.V. Nerazrushayushchiy kontrol'. T. 3. Ul'trazvukovoy kontrol' [Non-destructive testing. T. 3. Ultrasonic testing]. Moscow: Mashinostroenie Publ., 2004. 864 p.
  2. Karabutov A.A., Kershtein I.M., Pelivanov I.M., Podymova N.B. Laser ultrasonic investigation of the elastic properties of unidirectional graphite-epoxy composites // Mechanics of composite materials. 1998. V. 34, no. 6. Р. 575-582. doi: 10.1007/bf02254668
  3. Wu T.-T., Liu Y.-H. One the measurement of anisotropic elastic constants of fiber reinforced composite plate using ultrasonic bulk wave and laser generated Lamb wave // Ultrasonics. 1999. V. 37, no. 6. P. 405-412. doi: 10.1016/s0041-624x(99)00025-6
  4. Weinberg E.I., Weinberg И.А. Universal computer tomography for the development of technology and certification of industrial products. Selection Criteria // Dvigatel'. 2011. No. 4(76). Р. 22-27. (In Russ.)

Supplementary files

Supplementary Files
Action
1. JATS XML

Copyright (c) 2015 VESTNIK of the Samara State Aerospace University

This website uses cookies

You consent to our cookies if you continue to use our website.

About Cookies