International Journal of Precision Engineering and Manufacturing-Green Technology

http://link.springer.com/journal/40684

List of Papers (Total 102)

Joining and fabrication of metal matrix composites by friction stir welding/processing

Herein, friction stir welding (FSW) of metal matrix composites (MMCs) with different combinations of the reinforcement and the metal matrix is highlighted with a brief introduction into recent efforts that have been used to fabricate MMCs by FSW. As a solid state joining technique, FSW consumes significantly lower energy than conventional fusion welding processes. In addition to...

A review on optical fiber sensors for environmental monitoring

Environmental monitoring has become essential in order to deal with environmental resources efficiently and safely in the realm of green technology. Environmental monitoring sensors are required for detection of environmental changes in industrial facilities under harsh conditions, (e.g. underground or subsea pipelines) in both the temporal and spatial domains. The utilization of...

Lasers in additive manufacturing: A review

In recent years, additive manufacturing, also known as three-dimensional (3D) printing, has emerged as an environmentally friendly green manufacturing technology which brings great benefits, such as energy saving, less material consumption, and efficient production. These advantages are attributed to the successive material deposition at designated target areas by delivering the...

Review of 4D printing materials and their properties

Since its introduction, the 3D printing technology has been widely used in fields such as design, rapid prototyping, and biomedical devices, owing to its advantages of inexpensive, facile embodiment of computer 3D files into physical objects. Later, 4D printing was introduced by adding the temporal dimension to 3D. Stimuli such as heat, humidity, pH, and light trigger the...

Molecular dynamics study of thermodynamic properties of nanoclusters for additive manufacturing

4D printing is a new process that involves the use of 3D-printed objects and materials able to change shape over time. Therefore, a comprehensive understanding of 3D-printed objects is needed prior to developing 4D-printed ones. Selective laser melting (SLM) is a very promising 3D printing technique; however, because of the intense heat input, problems such as balling phenomena...

4D printing – fused deposition modeling printing with thermal-responsive shape memory polymers

Shape memory polymers (SMPs), as stimuli-responsive shape-changing polymers, change their deformed shape to pre-determined one under external stimuli, such as temperature, chemicals, light, etc. This research as part of the project in which employs four-dimensional (4D) printing technology to develop smart textile and wearable products. It describes the 4D printing process of the...

Sustainability aspects of a digitalized industry – A comparative study from China and Germany

Industrial production is currently undergoing a fundamental transformation, leading towards a digitalized and interconnected industrial production, which is subsumed under the term Industrial Internet (of Things) or Industrie 4.0. This paper discusses the changes that digitalization is expected to bring about in the industrial sector by comparing a highly industrialized (Germany...

Formability of CFRTP prepreg considering heat transfer

Carbon-fiber-reinforced thermoplastic (CFRTP) laminate undergoes large deformations and slip between each layer during the prepreg compression forming (PCF) process. Particularly, the formability of CFRTPs varies for each layer as a result of the temperature difference during heat transfer between tool and laminate because of the viscosity of resin. These behaviors affect the...

Development of durability test procedure of vibration-based energy harvester in railway vehicle

This study aims to develop a durability test procedure for vibration-based energy harvesters in the frequency domain. First, we investigated the vibration environment of a structure on which an energy harvester may be installed and determined the level and frequency range of the power spectral density (PSD) exerted on the energy harvester. Consequently, we developed a test...

Energy-saving method of parallel mechanism by redundant actuation

This paper presents a novel energy-saving method of a robotic system utilizing parallel mechanism by redundant actuation. The redundantly actuated system can distribute arbitrary actuating torques in a certain combination. By using this feature, the regenerative power dissipation and electric power loss are reduced. Moreover, the redundant actuation can reduce the peak torque of...

Research trends of metallic sandwich plates with single layer periodically repeated metallic inner structures (PRMIS) - focused on design, manufacturing and formability

Recently, the attempt to decrease greenhouse gases, noxious gases and utilized energy sources has emerged as a crucial issue in the world to manage problems of global warming, resource depletion and air pollution. Institutes, universities and industries related to transport vehicles have endeavored to solve these crucial problems through the reduction of the overall weight of...

A review of electrically-assisted manufacturing

The mechanical properties of metals change temporarily or permanently under application of electric currents under deformation. This phenomenon is often referred to as electroplasticity. The electroplasticity of metals and their alloys has been investigated under various loading conditions including tensile, compressive, bending, and hardness tests. Electrically-assisted...

Exploring the influential factors of manufacturers’ initial intention in applying for the green mark ecolabel in Taiwan

The Green Mark eco-label constitutes an essential program introduced by Taiwan’s Environmental Protection Administration to support environmental protection. In the manufacturing industry, the Green Mark eco-label is intended to enable differentiating between manufacturers that apply green processes and those that do not. This paper presents an assessment model for identifying...

Selection of optimum process parameters of biomachining for maximum metal removal rate

Micro-manufacturing is one of the growing technologies of near future. Non-traditional machining processes have been found to be beneficial for micro manufacturing using low density of energy for metal removal. To overcome environment related problems of chemical machining, biomachining has been developed over several years by making use of the metabolic activity of...

Development of green CMP by slurry reduction through controlling platen coolant temperature

Chemical mechanical polishing (CMP) is currently replacing a conventional chemical etching or mechanical polishing to remove overburdened copper deposit in printed circuit board (PCB) manufacturing process owing to its ability to realize a global planarization. In order to stabilize the CMP as one of the PCB manufacturing processes, the CMP machine has been investigated. This...

Dry rotary swaging–approaches for lubricant free process design

Rotary swaging is an incremental cold forming process and allows for the cost effective manufacture of cylindrical light weight components such as rods or hollow shafts. The process has a widespread use particularly in the automotive industry for example for the manufacture of axles and steering spindles. Besides the generation of desired geometries, rotary swaging offers the...

Electrical behavior of laser-sintered Cu based metal-organic decomposition ink in air environment and application as current collectors in supercapacitor

Cu based metal-organic decomposition (MOD) ink has been preferred as a printable conductive material in the field of printed electronics because it can mitigate the formation of undesired Cu oxide or precipitation of the metal source during storage and printing. However there will be oxidation of Cu during sintering process in air environment, for fabrication of conductive track...

Suppression of thermal crown of heating roll for large area thermal imprint with consideration of thermal resistance between roll and shaft

Printed electronic circuits are becoming increasingly employed in flexible electronics such as radiofrequency (RF) antenna modules and organic solar cells. To achieve a high-efficiency module, very thin and small electrodes need to be produced with high throughput. This work reports on a heating roll design for the roll-to-roll (R2R) thermal imprinting process. Due to non-uniform...

Uncertainty analysis in contact resistivity measurements of crystalline silicon solar cells

The achievement of obtaining low contact resistivity between silver electrodes and the emitter layer of a crystalline silicon solar cell has been a constant issue for the silver paste developers in crystalline silicon solar cell industries. However, it has been found that there are factors that significantly distort the accurate characterization of contact resistivity. One group...

Horizontal active vibration isolator (HAVI) using electromagnetic planar actuator (EPA)

This paper presents a horizontal active vibration isolator (HAVI) using both horizontal and vertical forces of an electromagnetic planar actuator (EPA). The horizontal force is used to reject horizontal disturbance while the vertical force is applied to adjust natural frequency of the HAVI. A simulation model of the active horizontal isolator with flexible beam column (FBC) is...

Short-term wind power prediction based on Hybrid Neural Network and chaotic shark smell optimization

By the quick growth of wind power generation in the world, this clean energy becomes an important green electrical source in many countries. However, volatile and non-dispatchable nature of this energy source motivates researchers to find accurate and robust methods to predict its future values. Because of nonlinear and complex behaviors of this signal, more efficient wind power...

Integrated hazardous materials management: Combining requirements from various environmental legislations to enable effective business compliance processes in industries

Enhanced global trade forces companies to comply with a variety of environmental legislations each being subject to continuous modifications. During the past years the number of environmental legislations increased dramatically while law enforcement agencies expanded their active analysis of companies and their products. The number of companies being accused to sell non-compliant...