Zeitschriften und Ausgaben

Volumen 16 (2022): Heft 1 (April 2022)

Volumen 15 (2021): Heft 1 (October 2021)

Volumen 14 (2021): Heft 1 (April 2021)

Volumen 13 (2020): Heft 1 (October 2020)

Volumen 12 (2020): Heft 1 (April 2020)

Volumen 11 (2019): Heft 1 (October 2019)

Volumen 10 (2019): Heft 1 (April 2019)

Volumen 9 (2018): Heft 1 (October 2018)

Volumen 8 (2018): Heft 1 (April 2018)

Zeitschriftendaten
Format
Zeitschrift
eISSN
2601-5773
Erstveröffentlichung
30 Dec 2018
Erscheinungsweise
2 Hefte pro Jahr
Sprachen
Englisch

Suche

Volumen 12 (2020): Heft 1 (April 2020)

Zeitschriftendaten
Format
Zeitschrift
eISSN
2601-5773
Erstveröffentlichung
30 Dec 2018
Erscheinungsweise
2 Hefte pro Jahr
Sprachen
Englisch

Suche

10 Artikel
Uneingeschränkter Zugang

Some Aspects of Damage Management for Cutting Tool Materials

Online veröffentlicht: 08 May 2020
Seitenbereich: 15 - 22

Zusammenfassung

Abstract

There are two concepts in the title that can be seen as “foreign” to the usual technical language. Both can have several meanings and thus we adapted them “flexibly” to the current needs. One way to understand the term “management” is through its functions: planning (defining purpose and means), organizing (defining tasks and methods), and direction (guidance, controlling), inspection (testing, comparing). It can also mean among other things, standpoint, circumstance, respect, or even character. Regarding the expression “damage management” the intended meaning here is reducing or to preventing damage to the tool, also improving the resistance of the tool material to damage, which besides material selection issues also has design, technology and operational aspects. This article gives an overview of some of these.

Schlüsselwörter

  • tool material
  • machining
  • damage resistance
  • wear
  • fracture
Uneingeschränkter Zugang

Human-Machine Communication and Crisis Management. An Automotive Industry Case Study

Online veröffentlicht: 08 May 2020
Seitenbereich: 23 - 27

Zusammenfassung

Abstract

The article presents some results of a larger study of crisis management in the automotive supply industry. This paper studies human - machine communication during organizational crises, an issue that can make the difference between success and failure. The topic is even more challenging in the highly standardized and regulated automotive industry. Using some methodologies taken from social sciences, we analyse the manner in which employees in the automotive supply industry handle unforeseen events. In spite of the increased number of standards and regulations, employees display ambiguous behaviour during unforeseen events, affecting trust in human-machine communication.

Schlüsselwörter

  • human-machine communication
  • crisis management
  • risk management
Uneingeschränkter Zugang

Recovery of Waste Heat Resulting from Turbocompressor Cooling

Online veröffentlicht: 08 May 2020
Seitenbereich: 28 - 33

Zusammenfassung

Abstract

The high efficiency of turbocompressors makes them ideal for supplying larger mines with com-pressed air. As the gas flows through the compressor, the pressure increases, generating a large amount of heat. This heat needs to be removed, and this is usually achieved through cooling towers and it ultimately escapes into the surroundings as waste heat. This article aims to study the recovery and possible use of this waste heat.

Schlüsselwörter

  • turbocompressor
  • waste heat
  • heat recovery
Uneingeschränkter Zugang

Automated Determination of Friction Coefficient

Online veröffentlicht: 08 May 2020
Seitenbereich: 34 - 37

Zusammenfassung

Abstract

The presented research is designed to meet a particular challenge facing the industry. Its aim is to automate the process of friction coefficient determination, using a method that enables quick and easy repeatability of measurements developed by S.C. Plasmaterm S.A in Târgu Mureş.

Schlüsselwörter

  • friction coefficient
  • measurement system
  • automation
Uneingeschränkter Zugang

Digitalization of ProDuction – A Challenge for the Industry and Education

Online veröffentlicht: 08 May 2020
Seitenbereich: 38 - 41

Zusammenfassung

Abstract

Today’s industry relies not only on raw material processing, but also on information. The huge amount of data obtained during the production process of goods and services; as well as information about the context of the production processes has made it necessary to account for, methodize, analyze and react in order to achieve a competitive market share. Fortunately, this technological leap has been able to support the above process, but the presence of those new technologies requires adequate preparation from the point of view of human resources too.

Schlüsselwörter

  • digitalization
  • Industry 4.0
  • information technology
  • education
Uneingeschränkter Zugang

The Roots of Bim

Online veröffentlicht: 08 May 2020
Seitenbereich: 42 - 49

Zusammenfassung

Abstract

Today’s architectural and civil engineering design is almost inconceivable without collaborative tools. Building Information Modeling supports this with a set of collaboratively usable data. The roots of this concept go back in the past, thus the present paper attempts to depict some of the milestones in its evolution.

Schlüsselwörter

  • building
  • information
  • modeling
  • history
Uneingeschränkter Zugang

Robots Application for Welding

Online veröffentlicht: 08 May 2020
Seitenbereich: 50 - 54

Zusammenfassung

Abstract

In this work, the authors give an overview of the advancement of industrial robots and show the mechanization of welding processes, step by step. As manual welding is a physically exhausting professional work, engineers have sought to improve work conditions since the industrial revolution. Unfortunately, even today, many procedures can only be performed manually. In the welding process, the highest level of mechanization is represented by the use of robotics. The entrance of Robots in the history of welding is recent, though their spread and development are rapid.

Schlüsselwörter

  • welding
  • robot
  • sensor
  • security
  • danger
Uneingeschränkter Zugang

Numerical Evaluation of the Shaper Cutter with Cylindrical Rake Face

Online veröffentlicht: 08 May 2020
Seitenbereich: 55 - 62

Zusammenfassung

Abstract

This paper deals with the geometric built-up of a theoretically profile errorless shaper cutter. Its proposed rake face is a cylindrical surface for each tooth. The setting parameters of this are the axis inclination angle and the grinding wheel’s radius. The possible domain of the setting parameters is computed from geometrical restrictive conditions. The proposed numerical evaluation consists in the computing of the orthogonal rake angle variation, together with the deviation of the generating pro-file from the perfect involute. The obtained results allow the formulation of some conclusions regarding the influence of the cylinder radius and the axis inclination: the best rake angle distributions are obtained when using increased radius values, while profile deviation becomes minimal when using smaller radii and axis inclination angles.

Schlüsselwörter

  • shaper cutter
  • rake face
  • rake angle
  • distribution
  • profile error
Uneingeschränkter Zugang

Droplet Size Analysis of Spray Nozzles

Online veröffentlicht: 08 May 2020
Seitenbereich: 62 - 66

Zusammenfassung

Abstract

In this paper we present laboratory equipment for illustrating the operation of spraying nozzles. It is also suitable for studying the basic processes of spraying and for measuring and evaluating the methods used in the control of sprayers. The equipment allows the monitoring of the spray film formed by the nozzles, measuring the yield of the nozzle and determining the size of the droplets formed. In the dissertation, we explore the factors influencing the droplet size. We compare the average diameter of droplets formed by the three hydraulic principle nozzles. Based on the average droplet diameters, the operation of the spray nozzles is analyzed and conclusions are drawn.

Schlüsselwörter

  • plant protection
  • nozzles
  • droplet size
  • water-sensitive paper
Uneingeschränkter Zugang

CAD Solution to Determine Points from Chipping Tool Solid Model Cutting Edges

Online veröffentlicht: 08 May 2020
Seitenbereich: 67 - 70

Zusammenfassung

Abstract

The Mixed CAD Generating Method, developed by the first author and presented in previous papers, is able to generate gear teeth gaps from a special points cloud. The generation method requires only a few specific points from the cutting edges of the generating tools. These points can be obtained in a first approach through a simple drawing of the cutting edges. The drawings can use either mathematical equations, or simply the construction and design principles of the cutting tools. In the case of multi-edge cutting tools of a higher level of complexity, or in case of the absence of the edge equations, there exists a simpler approach. It consists in building a solid model, or obtaining the solid model of the tools from the tool’s designer or manufacturer. In these cases, the generating points are downloaded from the solid model. This paper presents two possibilities of obtaining these points with usual CAD methods.

Schlüsselwörter

  • mixed CAD generating method
  • generating points
  • tool edge
  • solid model
10 Artikel
Uneingeschränkter Zugang

Some Aspects of Damage Management for Cutting Tool Materials

Online veröffentlicht: 08 May 2020
Seitenbereich: 15 - 22

Zusammenfassung

Abstract

There are two concepts in the title that can be seen as “foreign” to the usual technical language. Both can have several meanings and thus we adapted them “flexibly” to the current needs. One way to understand the term “management” is through its functions: planning (defining purpose and means), organizing (defining tasks and methods), and direction (guidance, controlling), inspection (testing, comparing). It can also mean among other things, standpoint, circumstance, respect, or even character. Regarding the expression “damage management” the intended meaning here is reducing or to preventing damage to the tool, also improving the resistance of the tool material to damage, which besides material selection issues also has design, technology and operational aspects. This article gives an overview of some of these.

Schlüsselwörter

  • tool material
  • machining
  • damage resistance
  • wear
  • fracture
Uneingeschränkter Zugang

Human-Machine Communication and Crisis Management. An Automotive Industry Case Study

Online veröffentlicht: 08 May 2020
Seitenbereich: 23 - 27

Zusammenfassung

Abstract

The article presents some results of a larger study of crisis management in the automotive supply industry. This paper studies human - machine communication during organizational crises, an issue that can make the difference between success and failure. The topic is even more challenging in the highly standardized and regulated automotive industry. Using some methodologies taken from social sciences, we analyse the manner in which employees in the automotive supply industry handle unforeseen events. In spite of the increased number of standards and regulations, employees display ambiguous behaviour during unforeseen events, affecting trust in human-machine communication.

Schlüsselwörter

  • human-machine communication
  • crisis management
  • risk management
Uneingeschränkter Zugang

Recovery of Waste Heat Resulting from Turbocompressor Cooling

Online veröffentlicht: 08 May 2020
Seitenbereich: 28 - 33

Zusammenfassung

Abstract

The high efficiency of turbocompressors makes them ideal for supplying larger mines with com-pressed air. As the gas flows through the compressor, the pressure increases, generating a large amount of heat. This heat needs to be removed, and this is usually achieved through cooling towers and it ultimately escapes into the surroundings as waste heat. This article aims to study the recovery and possible use of this waste heat.

Schlüsselwörter

  • turbocompressor
  • waste heat
  • heat recovery
Uneingeschränkter Zugang

Automated Determination of Friction Coefficient

Online veröffentlicht: 08 May 2020
Seitenbereich: 34 - 37

Zusammenfassung

Abstract

The presented research is designed to meet a particular challenge facing the industry. Its aim is to automate the process of friction coefficient determination, using a method that enables quick and easy repeatability of measurements developed by S.C. Plasmaterm S.A in Târgu Mureş.

Schlüsselwörter

  • friction coefficient
  • measurement system
  • automation
Uneingeschränkter Zugang

Digitalization of ProDuction – A Challenge for the Industry and Education

Online veröffentlicht: 08 May 2020
Seitenbereich: 38 - 41

Zusammenfassung

Abstract

Today’s industry relies not only on raw material processing, but also on information. The huge amount of data obtained during the production process of goods and services; as well as information about the context of the production processes has made it necessary to account for, methodize, analyze and react in order to achieve a competitive market share. Fortunately, this technological leap has been able to support the above process, but the presence of those new technologies requires adequate preparation from the point of view of human resources too.

Schlüsselwörter

  • digitalization
  • Industry 4.0
  • information technology
  • education
Uneingeschränkter Zugang

The Roots of Bim

Online veröffentlicht: 08 May 2020
Seitenbereich: 42 - 49

Zusammenfassung

Abstract

Today’s architectural and civil engineering design is almost inconceivable without collaborative tools. Building Information Modeling supports this with a set of collaboratively usable data. The roots of this concept go back in the past, thus the present paper attempts to depict some of the milestones in its evolution.

Schlüsselwörter

  • building
  • information
  • modeling
  • history
Uneingeschränkter Zugang

Robots Application for Welding

Online veröffentlicht: 08 May 2020
Seitenbereich: 50 - 54

Zusammenfassung

Abstract

In this work, the authors give an overview of the advancement of industrial robots and show the mechanization of welding processes, step by step. As manual welding is a physically exhausting professional work, engineers have sought to improve work conditions since the industrial revolution. Unfortunately, even today, many procedures can only be performed manually. In the welding process, the highest level of mechanization is represented by the use of robotics. The entrance of Robots in the history of welding is recent, though their spread and development are rapid.

Schlüsselwörter

  • welding
  • robot
  • sensor
  • security
  • danger
Uneingeschränkter Zugang

Numerical Evaluation of the Shaper Cutter with Cylindrical Rake Face

Online veröffentlicht: 08 May 2020
Seitenbereich: 55 - 62

Zusammenfassung

Abstract

This paper deals with the geometric built-up of a theoretically profile errorless shaper cutter. Its proposed rake face is a cylindrical surface for each tooth. The setting parameters of this are the axis inclination angle and the grinding wheel’s radius. The possible domain of the setting parameters is computed from geometrical restrictive conditions. The proposed numerical evaluation consists in the computing of the orthogonal rake angle variation, together with the deviation of the generating pro-file from the perfect involute. The obtained results allow the formulation of some conclusions regarding the influence of the cylinder radius and the axis inclination: the best rake angle distributions are obtained when using increased radius values, while profile deviation becomes minimal when using smaller radii and axis inclination angles.

Schlüsselwörter

  • shaper cutter
  • rake face
  • rake angle
  • distribution
  • profile error
Uneingeschränkter Zugang

Droplet Size Analysis of Spray Nozzles

Online veröffentlicht: 08 May 2020
Seitenbereich: 62 - 66

Zusammenfassung

Abstract

In this paper we present laboratory equipment for illustrating the operation of spraying nozzles. It is also suitable for studying the basic processes of spraying and for measuring and evaluating the methods used in the control of sprayers. The equipment allows the monitoring of the spray film formed by the nozzles, measuring the yield of the nozzle and determining the size of the droplets formed. In the dissertation, we explore the factors influencing the droplet size. We compare the average diameter of droplets formed by the three hydraulic principle nozzles. Based on the average droplet diameters, the operation of the spray nozzles is analyzed and conclusions are drawn.

Schlüsselwörter

  • plant protection
  • nozzles
  • droplet size
  • water-sensitive paper
Uneingeschränkter Zugang

CAD Solution to Determine Points from Chipping Tool Solid Model Cutting Edges

Online veröffentlicht: 08 May 2020
Seitenbereich: 67 - 70

Zusammenfassung

Abstract

The Mixed CAD Generating Method, developed by the first author and presented in previous papers, is able to generate gear teeth gaps from a special points cloud. The generation method requires only a few specific points from the cutting edges of the generating tools. These points can be obtained in a first approach through a simple drawing of the cutting edges. The drawings can use either mathematical equations, or simply the construction and design principles of the cutting tools. In the case of multi-edge cutting tools of a higher level of complexity, or in case of the absence of the edge equations, there exists a simpler approach. It consists in building a solid model, or obtaining the solid model of the tools from the tool’s designer or manufacturer. In these cases, the generating points are downloaded from the solid model. This paper presents two possibilities of obtaining these points with usual CAD methods.

Schlüsselwörter

  • mixed CAD generating method
  • generating points
  • tool edge
  • solid model

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