Comparison of two non-destructive inspection techniques on the basis of sensitivity and reliability

2007-01-01
Simir, Mehmet
Ankara, Alpay
Show full item record
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
152
views
0
downloads
Two non-destructive inspection (NDI) methods have been used to determine the damage tolerance life prediction of acro-engine turbine discs. For this purpose, low cycle fatigue cracks were examined in the compressor discs of tie bolt holes. The successful implementation of damage tolerance design method strongly depends on the sensitivity and reliability of applied NDI method.
Liquid penetrant inspection, Eddy current inspection, Non-destructive inspection, Damage tolerance design
https://hdl.handle.net/11511/64673
MATERIALS & DESIGN
Department of Metallurgical and Materials Engineering, Article

Suggestions

A practical guide for testing of complex geometry components by meter-display eddy current instruments
Doyum, Ahmet Bülent; Ertekin, S (1997-11-01)
Reliability and the reproducibility of results have always been an important concern in non-destructive inspection (NDI). This is especially the ase if the component is critical and has to be inspected periodically. If components are to be examined by Eddy Current Testing (ECT), the test procedure must take into account all the related parameters such as lift-off, geometry, possible conductivity and permeability changes on the test surface as well as the operator dependence. The utilisation of easy to manuf...
Investigation of Combustion Kinetics of Five Waste Wood Samples with Thermogravimetric Analysis
Yorulmaz, Sema Yurdakul; Atımtay, Aysel (2007-02-24)
In the present study, combustion mechanisms, thermal kinetics, and phases of combustion were investigated for untreated pine and treated MDF, plywood and particleboard samples. Waste wood samples were combusted in air at 10, 20 and 30 degrees C/min heating rates in TGA. As a result of TG analysis, thermal decomposition of treated samples was observed at lower temperatures as compared to the untreated pine sample because of the catalyzing effects of the chemicals in the samples. Therefore, there were less fl...
Empirical evaluation of storage materials and conditions for propellant grade white fuming nitric acid
Saç, Kaan; Üner, Deniz; Eşiyok, Hacı; Department of Chemical Engineering (2022-12-2)
The stability of propellant grade white fuming nitric acid (WFNA) during storage was investigated experimentally. A custom method was developed to monitor the propellant storage up to 600 hours at elevated temperatures. Two sets of test matrices were designed: a control test matrix was conducted for safety and test system qualification, and the master test matrix was carried out to assess the WFNA storage. The test parameters were selected as follows: two different ullage space values – 13.0% & 19% –, five ...
Prediction of damage in R/C shear panels subjected to reversed cyclic loading
Hindi, R; Mansour, M; Dicleli, Murat (Informa UK Limited, 2005-01-01)
In this paper, the damage prediction of shear-dominated reinforced concrete (RC) elements subjected to reversed cyclic shear is presented using an existing damage model. The damage model is primarily based on the monotonic energy dissipating capacity of structural elements before and after the application of reversed cyclic loading. Therefore, it could be universally applicable to different types of structural members, including shear-dominated RC members. The applicability of the damage model to shear-domi...
Comparison of suction and oedometer methods for the measurement of swell pressure
Cokca, E (Geological Society of London, 2000-05-01)
In this paper, a thermocouple psychrometric technique is used to measure soil suction and assess the reliability of a swell pressure prediction method. Kaolinite-bentonite clay mixtures were prepared to obtain expansive soils with a wide range of plasticities. Suction measurements using thermocouple psychrometers and constant volume swell tests in oedometers were made on statically compacted :specimens. Soil suction-water content relationships were evaluated. The results indicate a linear relationship betwe...
Citation Formats
M. Simir and A. Ankara, “Comparison of two non-destructive inspection techniques on the basis of sensitivity and reliability,” MATERIALS & DESIGN, pp. 1433–1439, 2007, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/64673.
METU IIS - Integrated Information Service open@metu.edu.tr