A Comparison Study on the Influence of Cutting Edge Hybrid Ultrasonic Thermal Technology versus Ultrasonic Cutting on Seatbelt Processing Quality

2020 ◽  
Vol 1157 ◽  
pp. 174-181
Author(s):  
Răzvan Ionuţ Iacobici ◽  
Gabriela Victoria Mnerie ◽  
Diana Sophia Codat ◽  
Camelia Versan Rosu
Keyword(s):  
Automotive Industry ◽  
Task Force ◽  
Quality Standard ◽  
Cutting Process ◽  
Experimental Program ◽  
Data Sets ◽  
Cutting Geometry ◽  
Thermal Cutting ◽  
Hybrid Module ◽  
Cutting Equipment

Research conducted aimed to compare the hybrid ultrasonic-thermal cutting technology with the classic thermal cutting one. The experimental program was carried out on the ISIM designed hybrid equipment, operating at a frequency of 35 KHz, with a cutting geometry of the ultrasonic horn - sonotrode and the thermal anvil designed specifically for the task at hand; the first phase of the experimental program was developed on the thermal cutting module, the second one was performed on the US-thermal hybrid module, both modules being part of the hybrid cutting equipment designed and patented by ISIM Timisoara. The research performed in this present paper, intends to highlight the benefits of the hybrid cutting technology when compared to classical thermal cutting, in order to process two types of materials with different specifications and dimensions. After visually inspection cut materials have been then compared with automotive seatbelt quality standard IATF - International Automotive Task Force 16949. Experiments highlighted that hybrid ultrasonic-thermal cutting process has a significant influence on the quality of processed materials when compared to classic thermal cutting process, which in some cases makes the materials unsuitable for use in the automotive industry. The paper further presents two types of technology data sets suitable for 2 types of materials and up to automotive industry requirements.

Experimental study of mild steel cutting process by using the plasma arc method

2021 ◽  
Vol 108 (2) ◽  
pp. 75-85
Author(s):  
H.M. Magid
Keyword(s):  
Industrial Process ◽  
Scanning Speed ◽  
Cutting Parameters ◽  
Operating Conditions ◽  
Kerf Width ◽  
Cutting Process ◽  
Plasma Cutting ◽  
Plasma Arc ◽  
Cutting Equipment

Purpose: In this study, plasma arc cutting (PAC) is an industrial process widely used for cutting various away types of metals in several operating conditions. Design/methodology/approach: It is carried out a systematic or an authoritative inquiry to discover and examine the fact, the plasma cutting process is to establish the accuracy and the quality of the cut in this current paper assessed a good away to better the cutting process. Findings: It found that the effect of parameters on the cutting quality than on the results performed to accomplish by statistical analysis. Research limitations/implications: The objective of the present work paper is to achieve cutting parameters, thus the quality of the cutting process depends upon the plasma gas pressure, scanning speed, cutting power, and cutting height. Practical implications: The product of the plasma cutting process experimentally has been the quality of the cutting equipment that was installed to monitor kerf width quality by exam the edge roughness, kerf width, and the size of the heat-affected zone (HAZ). Originality/value: The results reveal that were technically possessed of including all the relevant characteristics, then a quality control for the cutting and describe the consequence of the process parameters.

ISIM Own Contributions on Non-Conventional Abrasive Waterjet Cutting Technologies

2021 ◽  
Vol 890 ◽  
pp. 147-151
Author(s):  
Ion Aurel Perianu ◽  
Gabriela Victoria Mnerie ◽  
Radu Cojocaru ◽  
Emilia Florina Binchiciu
Keyword(s):  
Research Priorities ◽  
Industrial Applications ◽  
Water Jet ◽  
Cutting Process ◽  
Abrasive Waterjet ◽  
Abrasive Water Jet ◽  
Water Jet Cutting ◽  
Abrasive Water Jet Cutting ◽  
Cutting Equipment ◽  
Different Characteristics

Modern materials cutting operations are traditionally part of the research priorities and also in the production activities of ISIM Timișoara. In the last decade, within the institute, a special emphasis was placed on the development of the abrasive water jet cutting process as well as on implementing the research results obtained into industrial activities. The paper presents own achievements and contributions of ISIM to the development of the abrasive water jet cutting process in the following directions: cutting technologies for materials with different characteristics, innovative new patentable solutions regarding the cutting process respectively important modules in the composition of the water jet cutting equipment, ways to recycle used abrasive waste, solutions to streamline the process. The proposed solutions have been verified with good results in industrial applications, or have been proposed for analysis and development together with specialists in the field from important research units.

scholarly journals Use of mechanistic-empirical method of pavement design for performance sensitivity analysis to asphalt pavement fatigue

2021 ◽  
Vol 26 (3) ◽  
Author(s):  
Natalia Assunção Brasil Silva ◽  
Taciano Oliveira da Silva ◽  
Heraldo Nunes Pitanga ◽  
Geraldo Luciano de Oliveira Marques
Keyword(s):  
Design Method ◽  
Permanent Deformation ◽  
Empirical Method ◽  
Material Behavior ◽  
Experimental Program ◽  
Data Sets ◽  
Statistical Regression ◽  
Wide Range ◽  
Number Of Cycles

ABSTRACT In the new Brazilian mechanistic-empirical design method of asphalt pavements, MeDiNa, the characterization of permanent deformation (PD) for the selection of soils and gravel is based on tests performed with at least 150,000 loading cycles for each of the nine specimens indicated in the DNIT standard. Despite providing information about the material behavior under a wide range of testing conditions, the experimental program related to these PD characterizations is time consuming and it is believed that it can be optimized. This paper evaluates the influence of the number of loading cycle applications on the characterization of the materials. For this purpose, seven materials were analyzed at their optimum moisture content (OMC) and one of them was also compacted in a condition above the OMC, in a total of eight data sets. Statistical regression analyzes were performed to identify the parameters of the predictive model for different numbers of cycles and the PD predictions for the different materials were compared. From these results, simulations were performed in the MeDiNa software to predict the performance of the materials. Four different N values were evaluated, considering 150,000 cycles as reference: discarding the 500 first cycles, but considering the PD accumulated in that interval; discarding the 500 first cycles and considering the PD accumulated in that interval; final N of 80,000; and final N of 100,000. For the analyzed materials, no significant differences were observed in the PD prediction, even considering tests with 50,000 or 70,000 cycles less than the 150,000 cycles required in the standard. This indicates that, although characterization is recommended following standardized procedures, the experimental program of the current PD standard can possibly be significantly optimized by reducing the number of cycles applied to materials in laboratory tests. This possibility must be analyzed for each material.

Automotive Premium Quality Improvement by High-End-Visualization

2017 ◽  
Author(s):  
Serena Striegel ◽  
Benjamin Schleich ◽  
Daniel Zielinski ◽  
Sandro Wartzack
Keyword(s):  
Quality Improvement ◽  
Automotive Industry ◽  
Quality Standard ◽  
Life Cycles ◽  
Scientific Contribution ◽  
Customer Expectations ◽  
Working Groups ◽  
Important Quality ◽  
Short Product ◽  
Quality Features

Volatile markets, tough customer expectations, and short product life cycles are just some of the challenges the automotive industry has to deal with. In this context, important quality features are expressed as key product characteristics (KPC). The process of defining and reviewing such KPCs concerns each department of an automobile company. This paper presents a method for an intersubjective problem understanding of inter-divisional working groups and a common product KPC’s definition. The scientific contribution lies in the field of quality assessment for the premium-segment automotive industry, while the novelty can be found in providing the opportunity to take quality decisions based on variation simulations and on high-end-visualizations. The proposed method aims to realize and implement a higher premium quality standard and, at the same time, to reduce the number of physical prototypes, to shorten development times and to facilitate an intersubjective problem understanding. In relation to the developed method, an industrial application and its results are presented.

Experiments on Choking Flow of Subcooled Liquid Through a Simulated Steam Generator Tube Crack

2012 ◽  
Author(s):  
Brian Wolf ◽  
Shripad T. Revankar ◽  
Jovica R. Riznic
Keyword(s):  
Steam Generator ◽  
Discharge Rate ◽  
Experimental Program ◽  
Data Sets ◽  
Steam Generators ◽  
Steam Generator Tube ◽  
Subcooled Liquid ◽  
Discharge Rates ◽  
Few Data ◽  
Leak Before Break

The ability to estimate the leak rates from the through wall cracks in a steam generator tube is important in terms of radiological source terms and overall operational management of steam generators as well as demonstration of the leak-before-break condition. A literature survey showed that there are few data sets available on crack geometries related to steam generator tubing. In this study an experimental program was developed to measure the choking flow rate of subcooled water through well defined simulated steam generator tube crack geometries with L/D < 5.5, and results are compared with models in literature. Two types of test specimens were used in the experimental program. One, a round orifice like hole is created to simulate a pitting type flaw. The others are laser cut slits representing axial cracks. A pressure differential across the crack/break of 6.8 MPa is achieved. As subcooling increasing the flashing discharge rate also increases. A modified Burnel model was identified which predicts experimentally observed choking discharge rates from such geometries well.

scholarly journals The Effect of Position of Materials on a Build Platform on the Hardness, Roughness, and Corrosion Resistance of Ti6Al4V Produced by DMLS Technology

Metals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 1055
Author(s):  
Anna Guzanová ◽  
Dagmar Draganovská ◽  
Gabriela Ižaríková ◽  
Jozef Živčák ◽  
Radovan Hudák ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Surface Roughness ◽  
Corrosion Resistance ◽  
Statistical Analysis ◽  
Corrosion Rate ◽  
Position Effect ◽  
Experimental Program ◽  
Data Sets ◽  
Sintering Process ◽  
Direct Metal Laser Sintering

This article is focused on the effect of position on a build platform on the hardness, roughness and corrosion rate of parts (Ti6Al4V) produced by direct metal laser sintering (DMLS) technology. During the sintering process, the test samples were located at key positions—at the corners and in the middle of the build platform. An experimental program started with a microstructure investigation in two perpendicular directions in individual positions. The selected mechanical property—hardness—was investigated on metallographic cuts in both directions and all positions, and data sets underwent a statistical analysis (analysis of variance (ANOVA), t-test, F-test). The same procedure was repeated for an assessment of position effect to surface roughness (Kruskal–Wallis test) and material corrosion resistance. On the build platform, the course of hardness, roughness, and corrosion rate values that can be expected in individual positions was mapped in detail.

Development of paediatric electrophysiology standards for Florida Children’s Medical Services

2014 ◽  
Vol 24 (6) ◽  
pp. 1134-1149
Author(s):  
Jorge McCormack ◽  
Stephen Seslar ◽  
Grace Wolff ◽  
Ming Young ◽  
Randall Bryant ◽  
...  
Keyword(s):  
Task Force ◽  
Quality Standard ◽  
Medical Services ◽  
Outpatient Services ◽  
Paediatric Cardiology ◽  
Adult Congenital ◽  
History Of ◽  
Standard Documents ◽  
Quality Map ◽  
Children's Medical Services

AbstractThe Florida Children’s Medical Services (CMS) has a long-standing history of ensuring that providers of multiple paediatric subspecialties abide by the highest standards. The cardiac sub-committee has written quality standard documents that participating programmes must meet or exceed. These standards oversee paediatric cardiology services including surgery, catheterisations, and outpatient services. On April, 2012, the cardiac sub-committee decided to develop similar standards in paediatric electrophysiology. A task force was created and began this process. These standards include a catalogue of required and optional equipment, as well as staff and physician credentials. We sought to establish expectations of procedural numbers by practitioner and facility. The task force surveyed the members of the Pediatric and Congenital Electrophysiology Society. Finding no consensus, the task force is committed to generate the data by requiring that the CMS participating programmes enrol and submit data to the Multicenter Pediatric and Adult Congenital EP Quality (MAP-IT™) Initiative. This manuscript details the work of the Florida CMS Paediatric Electrophysiology Task Force.

Sign in / Sign up

Export Citation Format

Share Document