Wyniki wyszukiwania - BazTech

1

Detectability of welding imperfections in non-destructive PA and TOFD ultrasonic tests

Bednarek Borys, Jurkiewicz Rafał, Rzeźnikiewicz Agnieszka

Biuletyn Instytutu Spawalnictwa w Gliwicach

|

2022

|

Vol. 66, No. 1

21--32

EN

The primary objective of the article was to compare the PA and TOFD ultrasonic technique-based detectability of internal imperfections in welded joints. The scope of tests involved the making of joints as well as the performance of ultrasonic, radiographic and macroscopic metallographic tests. The tests enabled the comparison of indications obtained in the tests with the actual location and the size of imperfections. The test results were then compared to identify the accuracy of each technique in relation to previously assumed measurement requirements (e.g. the depth at which a given imperfection was located, characteristic dimensions, shift from the weld axis, etc.).

PL

Głównym założeniem niniejszego artykułu było porównanie wykrywalności niezgodności wewnętrznych w złączach spawanych za pomocą ultradźwiękowych technik PA oraz TOFD. Zakres działań uwzględnił utworzenie złącza, badania objętościowe metodami ultradźwiękową i radiograficzną oraz wykonanie badań metalograficznych makroskopowych, które umożliwiły odniesienie otrzymanych wskazań do rzeczywistego położenia i wymiarów niezgodności. Otrzymane wyniki zestawiono w celu określenia dokładności obu technik dla założonych wymagań pomiarowych (głębokość położenia defektu, wielkość wymiarów charakterystycznych, odsunięcie od osi spoiny).

2

Indicating and analysis the interrelation between terms - visual: management, control, inspection and testing

Knop Krzysztof

Production Engineering Archives

|

2020

|

Vol. 26, Iss. 3

110--120

EN

The multitude of concepts and methods of management and control related to the word "visual" in the area of production and quality management may cause difficulties with their perception, proper understanding and use of these terms by researchers from various backgrounds (not necessarily related to production) and countries, including Poland. In particular, the noticed inaccuracies in the use of terms with the word "visual" concern such terms as visual: management, control, inspection, and testing, where, for example, in the Polish language the first three different terms in English are named with the same phrase, which sometimes causes some confusion. The aim of the article was an attempt to distinguish, sometimes "troublesome" definitions, to indicate the area of their application, to define possible relations between them, which is a peculiar novelty. The article is an analysis of the literature related to these concepts, systematizes the types of visual concepts and methods in the area of production and quality. It defines in what context the indicated terms should be used by researchers and what is the relationship between them, and under what conditions they can be used separately or jointly. The article is an attempt to indicating and analysis of the interrelation between concepts in which the word "visual" appears concerning production practice. Concepts visual: management, control, inspection, and testing, as the author proves in the article, they should be translated into English with due diligence, due to the differences between them. It has been shown that there is a strong relationship between type definition pairs as visual management & visual control and visual inspection & visual testing, where it is not a mistake to use them interchangeably, and cases, where all these concepts can intertwine, are also given.

3

Visual Testing of Castings Defects after Vibratory Machining

Bańkowski D., Młynarczyk P.

Archives of Foundry Engineering

|

2020

|

Vol. 20, iss. 4

72--76

EN

The paper presents an example of the application of vibratory machining for castings based on the results of visual testing. The purpose of the work is to popularize non-destructive testing and vibratory machining as finishing process, especially in the case of cast objects. Visual testing is one of the obligatory non-destructive tests used for castings and welded joints. The basic requirements concerning the dimensional accuracy and surface texture of cast components are not met if visible surface flaws are detected. The tested castings, which had characteristic traces of the casting process, were subjected to vibratory machining. The machining with loose abrasive media in vibrating containers is aimed at smoothing the surface and reducing or completely removing flashes. To complement the visual testing were also conducted research on the contact profilometer Taylor Hobson PGI 1200. Particular attention was focused on measuring the height of flashes and changes in the surface of smoothed details based on BNIF No. 359 touch-visual patterns. Based on the work, it can be concluded that vibratory machining allows for removal flashes and smoothing of the surface of aluminum alloy cast objects.