Technical Diagnostics and Non-Destructive Testing, 2021, №04



2021 №04 (05)

DOI of Article 10.37434/tdnk2021.04.06

2021 №04 (01)

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Technical Diagnostics and Non-Destructive Testing #4, 2021, pp. 54-57

Investigations of engraving technology and checking the quality of engraving the surfaces of materials with special organoleptic properties with application of contrasting dyes

V.V. Nesin, O.S. Frankov

Ukrainian Research Institute of Special Equipment and Forensic Science of the Security Service of Ukraine. 3 Mikoly Vasylenka, 03113, Kyiv. E-mail: witnes@ukr.net

Application of three methods of investigation of optical density of materials, namely observation, densitometric and spectrometric is considered. Observation method was used to study the organoleptic properties of characteristic materials, which influence their perception by observers and machining operators. Features of engraving performance, procedure of checking the quality of such processing, and rubbing in contrast paint, were analyzed. It is determined that the technological marking, shallow engraving, surface roughness, affine space made up by points, formed on the surface by machining, defects of the type of bands, lines, depressions and protrusions of approximately 0.1 mm size in materials with special organoleptic properties are not perceived by observers, as a result of manifestation of psychophysiological Weber – Fechner law as to visual perception of optical density of the material within the visible range of perception of electromagnetic waves of 380 – 750 nm length. The general appearance and geometrical characteristics of engraved inscriptions and symbols, made on materials with special organoleptic properties, are recommended. 17 Ref., 4 Fig.
Keywords: organoleptic properties of materials, influence on optical perception of involved personnel, engraving, surface control methods, optical density rubbing in contrasting paint, technological processing route

Received: 07.12.2021

References

1. ISO 7000. Graphical symbols for use on equipment – Index and synopsis.
2. DSTU GOST 25874:2008: Radiolectronic, electronic and electrotechnical equipment. Conventional functional designations [in Russian].
3. ОSТ 4.270.001-84: Electronic instruments. Reference graphic symbols for legend replacement [in Russian].
4. Nesin, V.V. (2016) Nonstandard symbols for legend replacement in instrument engineering: Development, engraving and quality control. In: Abstr. of Papers of 9th Sci.-Pract. Conf. on Future Outlook of Instrument Engineering (Kyiv, 17-18 April, 2016), NTUU Igor Sikorsky KPI, 64 [in Ukrainian].
5. Pidoprygora, Yu.A., Frankov, O.S., Nesin, V.V. (2019) Features of non-destructive control of engraved symbols on parts from white block polyamide In: Abstr. of Papers of 9th Sci.- Pract. Conf. on Instrument Engineering: State-of-the-art and Prospects (15-16 May, 2019), NTUU Igor Sikorsky KPI, 155–156 [in Ukrainian].
6. Polyamide. https://aplast.com.ua/poliamid [in Russian].
7. DSTU EN ISO 9712:2014 (UA ISO 9712:2012, IDT; ISO 9712:2012, IDT). Non-destructive testing. Qualification and certification of NDT [in Ukrainian].
8. NPAOP 0.00-1.63-13. Rules of certification of personnel of non-destructive testing. Approved by the order of the Ministry of Emergencies of Ukraine on 10.12.2012 No.1387, registered in the Ministry of Justice of Ukraine on 02.01.2013 onNo. 10/22542, entered into force on 05.02.2013 [in Ukrainian].
9. STTU USNDT 01-2000. System of certification of non-destructive testing personnel. Basic provisions. Valid from 12.10.2000, Kyiv, USNDT [in Ukrainian].
10. GOST 7512. Non-destructive testing. Welded joints. Radiographic method. [in Russian].
11. DSTU EN ISO 5579:2014. Non-destructive testing. Radiographic testing of metallic materials using film and X- or gamma rays. Basic rules [in Ukrainian].
12. Gotra, Z.Yu., Teit, J., Kikineshi, R. et al. (2007) Structure and optical properties of transparent conducting films based on BaCuTeF. Visnyk NU Lvivska Politekhnika: Elektronika, 592, 13–17 [in Ukrainian].
13. Frankov, O.S., Nesin, V.V., Shabetia, S.A. (2019) Organoleptic properties of block polyamide and decrease of their influence on subjective possibilities of operator in mechanical treatment of parts. In: Proc. of Int. Sci.-Tech. Conf. on New Materials and Technologies in Mechanical Engineering. Kyiv, NTUU Igor Sikorsky KPI, 207–208.
14. Yakovlev, A.D., Yakovlev, S.A. (2016) Paint-and-lacquer coatings of functional purpose. St.-Petersburg, KhIMIZDAT [in Russian].
15. Kaminskyi, Yu. (2020) Enamel paint PF-115: Technical characteristics, composition, application [in Ukrainian]. https//isu.org.ua
16. Alkyd enamel PF-115 [in Ukrainian]. https//farbex.ua.
17. Nesin, V.V., Pidoprygora, Yu.A., Frankov, O.S. (2021) Change of technology of pole marking on low-contrast side surfaces of block power supply sockets of “Radius-E” product from white polyamide. Innovative proposal 91 ISTE SBU, submitted on 08.02.2021, recognized on 02.03.2021, certificate dated 12.04.2021 [in Ukrainian].

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