Analysis Of Potentiometric Methods Used For Crack Detection In Forging Tools

Pilc, Jozef; Drbúl, Mário; Stančeková, Dana; Varga, Dániel; Martinček, Juraj; Kuždák, Viktor

doi:10.1515/teen-2015-0007

Cited by 3 publications

(3 citation statements)

References 4 publications

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“…The tunnel image is often a variety of different, irregular, disordered, and different forms of noise. These noises seriously affect the crack detection, but the traditional filtering algorithm cannot completely eliminate all kinds of noises [17]. Therefore, this paper proposes a filter algorithm based on connected region.…”

Section: Image Processing Technology and Related Algorithmsmentioning

confidence: 99%

Crack Detection Technology of Subway Tunnel Based on Image Processing

2023

IJETC

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Nowadays, the detection technology of cracks in subway tunnels with increasingly developed rail transit in China is an important research direction. The subway will be a pillar of future traffic, so the safety of subway tunnels is also a top priority. Tunnel cracks are one of the most common problems. In the past, there were many methods for detecting cracks, but each has its own shortcomings, so this paper proposes a new algorithm. The purpose of the experiment in this paper is to identify tunnel cracks by designing an automatic tunnel crack detection system based on machine vision, in order to enhance the image using a combination of Mask homogenization and gray-scale corrosion, and use a Gaussian-fast median filter algorithm A large amount of noise is filtered out, and the crack image is segmented based on the Otsu method, and finally a binary image is obtained. The research results show that the proposed algorithm has a recognition rate of more than 95% for ordinary cracks, and an accuracy rate of 83% for the surface cracks of subway tunnels. Advantage. It is believed that this algorithm will greatly improve the safety of construction and train operation and protect people's lives.

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Section: Image Processing Technology and Related Algorithmsmentioning

confidence: 99%

Crack Detection Technology of Subway Tunnel Based on Image Processing

2023

IJETC

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“…The basic research work on the examination of the abrasion resistance of materials against abrasive wear on abrasive surface friction was published by several authors [4,5,6]. Until now, there is no uniform view of the most appropriate type of material structure in terms of abrasion resistance.…”

Section: Analysis Of the Current Statementioning

confidence: 99%

Methods for Increasing the Material Resistance of the Mulching Tool Body Against its Deformation in Operation

Ľuptáčiková

Ťavodová

2017

Technological Engineering

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Instruments working in the cultivation of forest areas, for example under the guidance of high stress, are exposed to factors of heterogeneous environment which are soil, wood, various types of rocks, sometimes waste -metal, plastics or glass as well. The mulching tool body, the forging, deforms and worsens rapidly after loss of the WC toe-caps. Currently used tools have a non-heat-treated body material with a ferritic-pearlitic structure that has low abrasion resistance. One of the possibilities is to heat the tool body. Another possibility is to apply suitable welds to exposed areas. By correctly selecting the thermal mode of the tool material or by applying the welded material to the exposed body part of the tool, we can ensure that the tool's operating time is increased.

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“…In last time, Sato et al [16] could evaluate heating cycle of rake face of cutting tool by pyrometer and optic fiber inserted to the rotating tool. [17] With regard to finishing milling, there were only few studies dealing with temperature measurement. Ng et al [18] estimated the temperature of milling by thermocouple inserted to the workpiece.…”

Section: Introductionmentioning

confidence: 99%

Cutting Zone Temperature Identification During Machining of Nickel Alloy Inconel 718

Czán

Daniš

Holubják

et al. 2017

Technological Engineering

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Quality of machined surface is affected by quality of cutting process. There are many parameters, which influence on the quality of the cutting process. The cutting temperature is one of most important parameters that influence the tool life and the quality of machined surfaces. Its identification and determination is key objective in specialized machining processes such as dry machining of hard-to-machine materials. It is well known that maximum temperature is obtained in the tool rake face at the vicinity of the cutting edge. A moderate level of cutting edge temperature and a low thermal shock reduce the tool wear phenomena, and a low temperature gradient in the machined sublayer reduces the risk of high tensile residual stresses. The thermocouple method was used to measure the temperature directly in the cutting zone. An original thermocouple was specially developed for measuring of temperature in the cutting zone, surface and subsurface layers of machined surface. This paper deals with identification of temperature and temperature gradient during dry peripheral milling of Inconel 718. The measurements were used to identification the temperature gradients and to reconstruct the thermal distribution in cutting zone with various cutting conditions.

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Analysis Of Potentiometric Methods Used For Crack Detection In Forging Tools

Cited by 3 publications

References 4 publications

Crack Detection Technology of Subway Tunnel Based on Image Processing

Crack Detection Technology of Subway Tunnel Based on Image Processing

Methods for Increasing the Material Resistance of the Mulching Tool Body Against its Deformation in Operation

Cutting Zone Temperature Identification During Machining of Nickel Alloy Inconel 718

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