scholarly journals A Cost Effective Rapid Weld Technology Configuration

2020 ◽  
Vol 13 (1) ◽  
pp. 105-109
Author(s):  
Márk Laki ◽  
János Kuti
Keyword(s):  
Welded Joint ◽  
Cost Effective ◽  
Hardness Measurement ◽  
Steel Sheets ◽  
New Process

AbstractThe research focuses on determining the application parameters of a new process developed by Cloos. With the use of Cloos Rapid Weld technology (metal active gas welding), the authors carried out welding experiments on S235JR steel sheets (6 mm and 8 mm thick). The results of the welding experiments were verified by hardness measurement [1–3]. The goal is to establish one side one row suitable welded joint by the used technology.

Intrinsic Hybrid Composites for Lightweight Structures: New Process Chain Approaches

2016 ◽  
Vol 1140 ◽  
pp. 239-246 ◽  
Author(s):  
Simon Frederik Koch ◽  
Daniel Barfuss ◽  
Mathias Bobbert ◽  
Lukas Groß ◽  
Raik Grützner ◽  
...  
Keyword(s):  
Hybrid Composites ◽  
Process Chain ◽  
Lightweight Structures ◽  
Fiber Placement ◽  
Reinforced Plastics ◽  
Steel Sheets ◽  
Process Chains ◽  
New Process ◽  
Hybrid Laminates ◽  
Automated Fiber Placement

This publication describes new process chain approaches for the manufacturing of intrinsic hybrid composites for lightweight structures. The introduced process chains show a variety of different part and sample types, like insert technology for fastening of hollow hybrid shafts and profiles. Another field of research are hybrid laminates with different layers of carbon fiber reinforced plastics stacked with aluminum or steel sheets. The derived process chains base on automated fiber placement, resin transfer molding, deep drawing, rotational molding and integral tube blow molding.

Efficient Processing of Metal-Matrix-Composites by Combining Direct Pressure Sintering and Subsequent Thixoforging

2015 ◽  
Vol 825-826 ◽  
pp. 167-175
Author(s):  
Andreas Storz ◽  
Thomas Schubert ◽  
Thomas Weissgärber ◽  
Christoph Seyboldt ◽  
Kim Rouven Riedmüller
Keyword(s):  
Cost Effective ◽  
Special Importance ◽  
Matrix Composites ◽  
Homogeneous Microstructure ◽  
New Process ◽  
Direct Pressure ◽  
Efficient Processing ◽  
Near Net Shape ◽  
Semi Solid

The paper describes a cost effective and innovative combination of direct pressure sintering and subsequent thixoforming to produce MMC-components in (near-) net shape quality and, thus, to make these interesting materials attractive to mass production.First results of some combinations of aluminium matrix alloys with different ceramic reinforcements, consolidated by fast pressure sintering show the efficiency of this technology.The further processing of the consolidated billets has been performed by thixoforging. It can be shown, that the homogeneous microstructure from the direct pressure sintering stage with uniformly distributed ceramic reinforcements can be maintained over the semi-solid state and a full densification can be achieved. Form filling was complete and surface quality was comparable to forgings from conventional alloys.This new process flow shows advantages regarding the material yield in each of the processing steps. The (near-) net shape quality of thixoforged components allows a reduced effort for machining, which is of special importance for composite materials with a high content of wear resistant hard phases like SiC-particles.

3D system-in-package design using stacked silicon submount technology

2015 ◽  
Vol 32 (2) ◽  
pp. 63-72 ◽  
Author(s):  
Mingzhi Dong ◽  
Fabio Santagata ◽  
Robert Sokolovskij ◽  
Jia Wei ◽  
Cadmus Yuan ◽  
...  
Keyword(s):  
Cost Effective ◽  
Micro Electro Mechanical System ◽  
Wafer Level ◽  
Content Type ◽  
Package Design ◽  
Smart Lighting ◽  
Passive Devices ◽  
New Process ◽  
3D Stacking ◽  
The Cost

Purpose – This study aims to provide a flexible and cost-effective solution of 3D heterogeneous integration for applications such as micro-electro-mechanical system (MEMS) applications and smart sensor systems. Design/methodology/approach – A novel 3D system-in-package (SiP) based on stacked silicon submount technology was successfully developed and well-demonstrated by the fabrication and assembly process of a selected smart lighting module. Findings – The stacked module consists of multiple layers of silicon submounts which can be designed and fabricated in parallel. The bonding and interconnecting process is quite simple and does not require complicated equipment. The 3D stacking design offers higher silicon efficiency and miniaturized package form factor. The submount wafer can be assembled and tested at the wafer level, thus reducing the cost and improving the yield. Research limitations/implications – The embedding design presented in this paper is applicable for modules with limited number of passives. When it comes to cases with more passive devices, new process needs to be developed to achieve fast, inexpensive and reliable assembly. Originality/value – The presented 3D SiP design is novel for applications such as smart lighting, Internet of Things, MEMS systems, etc.

Analysis of Welds Made by Delta Spot Method

2015 ◽  
Vol 818 ◽  
pp. 229-232
Author(s):  
Ján Viňáš ◽  
Luboš Kaščák
Keyword(s):  
Spot Welding ◽  
Welded Joint ◽  
Galvanized Steel ◽  
Metallographic Analysis ◽  
Welding Parameters ◽  
Resistance Spot ◽  
Steel Sheets ◽  
Resistance Spot Welds ◽  
Welding Processes

Resistance spot welding has been widely used in sheet fabrication for several decades. Development of new materials leads to innovation of welding processes. The paper describes the principle of innovative welding method known as Delta Spot and evaluates the properties of Delta Spot joints made by combination of galvanized steel sheets H220PD (a0 = 0.9 mm) and TRIP 40/70+Z100MBO (a0 = 0.77 mm). The quality of welded joints was evaluated by tensile test and metallographic analysis. The influence of the welding parameters on the structure of welded joint was observed too. The properties of Delta Spot joint were compared to the properties of standard resistance spot welds.

scholarly journals Test Generation Algorithm for Fault Detection of Analog Circuits Based on Extreme Learning Machine

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Jingyu Zhou ◽  
Shulin Tian ◽  
Chenglin Yang ◽  
Xuelong Ren
Keyword(s):  
Extreme Learning Machine ◽  
Analog Circuits ◽  
Test Generation ◽  
Cost Effective ◽  
Fault Classification ◽  
The Novel ◽  
Analog Device ◽  
Generation Algorithm ◽  
New Process ◽  
Learning Machine

This paper proposes a novel test generation algorithm based on extreme learning machine (ELM), and such algorithm is cost-effective and low-risk for analog device under test (DUT). This method uses test patterns derived from the test generation algorithm to stimulate DUT, and then samples output responses of the DUT for fault classification and detection. The novel ELM-based test generation algorithm proposed in this paper contains mainly three aspects of innovation. Firstly, this algorithm saves time efficiently by classifying response space with ELM. Secondly, this algorithm can avoid reduced test precision efficiently in case of reduction of the number of impulse-response samples. Thirdly, a new process of test signal generator and a test structure in test generation algorithm are presented, and both of them are very simple. Finally, the abovementioned improvement and functioning are confirmed in experiments.

A PROPOSAL FOR A SINGLE TRIBUNAL OF ESTATES DISTRIBUTION IN MALAYSIA

2015 ◽  
Vol 75 (10) ◽  
Author(s):  
Fatin Afiqah Md. Azmi ◽  
Mohammad Tahir Sabit Haji Mohammad
Keyword(s):  
Cost Effective ◽  
Research Paper ◽  
Full Information ◽  
Legal Systems ◽  
New Process ◽  
Civil Laws

This research paper attempts to propose the replacement of the costly and time consuming process for the distribution of estates of Muslims in Malaysia in four agencies with a cost-effective process in a single tribunal that have full information about estates and has expertise in Islamic and Civil laws. For this, the existing framework and process of estates distribution is evaluated. The overall process is lengthy, costly, and in some cases, it is ineffective. Duality of legal systems and multiplicity of administrative and judicial agencies are thought to be the causes of the problem. To remedy this problem, a single tribunal with a new process therefore is proposed.  

Hydrogeformte Strömungsprofile aus Stahlblech/Hydroforming of airfoils using bent steel sheets - Product design and technological-economical selection of sheet metal forming processes in practice

2015 ◽  
Vol 105 (10) ◽  
pp. 744-746
Author(s):  
D. Landgrebe ◽  
M. Pröhl
Keyword(s):  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Cost Effective ◽  
High Accuracy ◽  
Process Chain ◽  
Steel Sheets ◽  
Geometrical Complexity ◽  
Small Wind Turbines ◽  
Selection Of

Innerhalb des Projekts „HyBlade“ wurde ein Flügelprofil aus Stahlblech entwickelt. Zum Einsatz kommen bewährte Fertigungstechniken wie das Abkanten einer Vorform und das Hydroforming zum Kalibrieren der finalen Geometrie. Das Verfahren stellt eine hohe Maßhaltigkeit sicher – die wesentliche Voraussetzung für gute Aerodynamik und hohe Energieausbeute von Windkraftanlagen. Die wirtschaftliche Prozesskette gestattet darüber hinaus auch die Herstellung größerer Blätter mit weitaus komplexeren Geometrien.   In the HyBlade project, a sheet metal based airfoil used for blades of small wind turbines has been developed. Well known forming techniques have been used to produce a bent preform that is finally calibrated via hydrofoming. This manufacturing technology ensures a high accuracy of the blade, resulting in good aerodynamic conditions and energy efficiency. The very cost-effective process chain furthermore offers the possibility to form even larger blades with a higher geometrical complexity.

Sandwich Manufacturing with Foam Core and Aluminum Face Sheets – A New Process without Rolling

2018 ◽  
Vol 933 ◽  
pp. 3-10 ◽  
Author(s):  
Jörg Hohlfeld ◽  
Thomas Hipke ◽  
Friedrich Schuller
Keyword(s):  
Manufacturing Process ◽  
Rolling Process ◽  
Manufacturing Processes ◽  
Foam Core ◽  
Steel Sheets ◽  
New Process

The manufacturing processes for sandwiches made with aluminum or steel sheets are differentiated by their various melting ranges. Sandwiches with aluminum face sheets have recently been produced using to the so-called AFS technology, which includes a rolling process. However, if it is desirable to avoid rolling to reduce costs and allow for quick and flexible responses to the needs of the customer, the manufacturing process must be redesigned.

Austenite Continuous Cooling Transformation Curve of LF2 Steel

2012 ◽  
Vol 538-541 ◽  
pp. 2067-2070
Author(s):  
Chun Li Mo ◽  
Zhou Li ◽  
Xu Ming Guo
Keyword(s):  
Thermal Expansion ◽  
Cooling Rate ◽  
Hardness Measurement ◽  
Martensite Phase ◽  
Cooling Process ◽  
Phase Zone ◽  
Steel Microstructure ◽  
Cct Curve ◽  
New Process ◽  
Transformation Curve

With the thermal expansion-metallograph method and hardness measurement,the critical point at of LF2 steel was determined at Gleeble1500 thermal mechaical simulator.By measuring different expanding curves of CCT in different cooling rate,CCT curve diagram was obtained.The affect of cooling rate on steel microstructure and hardness was studied.The results shown that there are four phase zone in the CCT diagram which meaning four different transformation may take place at LF2 steel cooling process,including ferrite ,pearlite,bainite,as well as martensite phase transformation.The Ms point is 320°C.All those provide the references for welding practice and help to establish new process.

A New Process for Preparing Nanosize Ceramic Powders

1994 ◽  
Vol 351 ◽  
Author(s):  
Yong S. Zhen ◽  
Kenneth E. Hrdina ◽  
Robert J. Remick
Keyword(s):  
Particle Size ◽  
Metal Oxides ◽  
Average Particle Size ◽  
Cost Effective ◽  
Narrow Particle Size Distribution ◽  
Average Particle ◽  
Mixed Metal Oxides ◽  
Ceramic Powders ◽  
New Process ◽  
The Cost

ABSTRACTWe have developed a new poly-foam process for the cost effective preparation of ceramic nanoparticles. The process utilizes the chemistry of polyurethane reactions and is proven to be effective for forming nanometer size ceramic powders of a great variety of single metal oxides and mixed metal oxides. In general, ceramic powders can be prepared by this process having a range of average particle size between 3 to 50 nm, with very narrow particle size distribution. They are free of hard agglomerates, are chemically pure and uniform, and are essentially spherical in shape.

Sign in / Sign up

Export Citation Format

Share Document