scholarly journals Bird safety coating for architectural and commercial applications

2020 ◽  
Vol 10 (4) ◽  
pp. 50-55
Author(s):  
György Vikor ◽  
Bernd Disteldorf ◽  
Francis Wuillaume ◽  
Jian-gang Weng ◽  
Adam Burghardt ◽  
...  
Keyword(s):  
Contrast Ratio ◽  
Test Results ◽  
Environment Friendly ◽  
Human Eye ◽  
Pvd Coating ◽  
Sputter Coating ◽  
Commercial Applications

Scientific observations conclude that modern buildings can cause a high number of bird deaths due to birds’ collision with glass windows and glass walls. There are many efforts to put bird-deterrent patterns on glass in order to avoid bird collision. To make the patterns environment-friendly and meanwhile invisible for human eye, we developed a special “first surface PVD coating”. This paper describes a design for bird-deterrent stack from sputter-coating processes, our method to improve the contrast ratio between coated and uncoated area, followed by some discussions on the tunnel-test results.

Role of PVD coating on wear and surface integrity during environment-friendly micro-drilling of Ni-based superalloy

2020 ◽  
Vol 272 ◽  
pp. 122741
Author(s):  
Sabana Azim ◽  
Soumya Gangopadhyay ◽  
Siba Sankar Mahapatra ◽  
Rinku Kumar Mittal ◽  
Ramesh Kumar Singh
Keyword(s):  
Surface Integrity ◽  
Environment Friendly ◽  
Pvd Coating ◽  
Micro Drilling

Preparation of Denatured Alcohol-Modified SPI-Based Adhesive

2012 ◽  
Vol 557-559 ◽  
pp. 987-990
Author(s):  
Yu Feng Ban ◽  
Hai Feng Zhu ◽  
Wei Zhao
Keyword(s):  
Shear Strength ◽  
Calcium Hydroxide ◽  
Soy Protein ◽  
Soy Protein Isolate ◽  
Protein Isolate ◽  
Orthogonal Test ◽  
Test Results ◽  
Single Factor ◽  
Air Drying ◽  
Environment Friendly

An environment-friendly soy protein isolate (SPI)-based adhesive for wood was prepared using denatured alcohol-modified SPI, calcium hydroxide and sodium silicate. On the basis of the single factor test results, an orthogonal test of 4 elements and 3 levels was carried out to optimize formula ingredients. The modified SPI adhesive contained more calcium hydroxide than unmodified SPI adhesive and exhibited good performance. The shear strength of the specimen bonded with the modified adhesive was 82.3 MPa; after three cycles of water-soaking and air-drying, the decrease in shear strength was as low as 7.9%.

A Novel Low Cost Package for Radio Frequency Applications

2013 ◽  
Vol 135 (2) ◽  
Author(s):  
Sandeep Chaturvedi ◽  
Shiban K. Koul
Keyword(s):  
High Frequency ◽  
Printed Circuit Board ◽  
Low Cost ◽  
Cost Effective ◽  
Circuit Board ◽  
Test Results ◽  
Printed Circuit ◽  
Pcb Manufacturing ◽  
Manufacturing Techniques ◽  
Commercial Applications

Design, fabrication, and test results of a novel 3-layer RF package using a commonly available high frequency laminate are presented in this paper. The developed package can be manufactured using standard multilayer printed circuit board (PCB) manufacturing techniques making it cost effective for commercial applications. The package exhibits excellent RF characteristics up to 6 GHz.

scholarly journals Mechanical Properties of Steel Fibers and Nanosilica Modified Crumb Rubber Concrete

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Yihong Wang ◽  
Jiawei Chen ◽  
Danying Gao ◽  
E. Huang
Keyword(s):  
Mechanical Properties ◽  
Steel Fiber ◽  
Crumb Rubber ◽  
Steel Fibers ◽  
Test Results ◽  
Environment Friendly ◽  
Modified Method ◽  
Concrete Mixtures ◽  
Crumb Rubber Concrete ◽  
Rubber Concrete

Crumb rubber concrete (CRC) is an environment-friendly material using crumb rubber as a composition of cement concrete. It provides an alternative method for recycling of waste tires scientifically. CRC exhibits numerous advantages compared to ordinary concrete. However, the application of CRC is limited due to its low compressive and tensile strengths. This paper puts forward a new modified method by adding steel fibers and nanosilica in CRC. Material properties’ testing of eighteen concrete mixtures was investigated, considering different strength grades of CRC and crumb rubber contents. In addition, four different steel fiber contents (0%, 0.5%, 1.0%, and 1.5%) and three different nanosilica content (0%, 1%, and 2%) were taken into consideration. The brittle failure of the CRC can be improved and the mechanical properties can be enhanced according to the test results. More importantly, the modified CRC with 1.0% steel fiber content has relatively high compressive and splitting tensile strengths. Furthermore, the noncompactness of CRC can be effectively improved by nanosilica, enhancing the efficiency of steel fibers simultaneously. Finally, the failure mechanism of the modified CRC is discussed in this paper.

scholarly journals PRODUCTION AND CHARACTERIZATION OF MELT SPUN POLY (Ԑ-CAPROLACTONE) FIBERS HAVING DIFFERENT CROSS SECTIONS

2019 ◽  
Vol 2019 ◽  
pp. 42-46
Author(s):  
Figen SELLI ◽  
Ümit Halis ERDOĞAN
Keyword(s):  
Cross Sections ◽  
Melt Spinning ◽  
Hollow Structure ◽  
Raw Material ◽  
Test Results ◽  
Environment Friendly ◽  
Fiber Properties ◽  
Production Parameters ◽  
Melt Spun

Abstract: Poly (ԑ-caprolactone) (PCL) is a member of petrochemical raw material based biodegradable polyesters. Numerous studies have applied electrospinning, wet spinning and melt spinning techniques for processing fibers from PCL and its copolymers. The thermoplastic nature, low melting point and high extensibility of PCL makes it a good candidate for processing with melt-spinning method which is an economic and environment friendly fiber production process. Several studies have investigated the production of PCL fibers via melt-spinning; however, there is still significant room for improvement in process parameters and fiber properties. Therefore, in this study, we used different spin pack designs, extrusion and drawing parameters for the melt spinning of neat PCL filaments. Melt-spun solid and hollow multifilaments having smooth surfaces were successfully produced by using a lab-scale melt spinning device. Crystallinity of multifilaments remained unchanged in terms of production parameters. Tensile test results suggest that PCL filaments can be produced using various types of spin packs with decent mechanical properties by means of melt spinning. Hollow structure can extend the field of application of fibers in medical appicatios by taking the advabtage of its carrier properties.

Vacuum Packaging for High-Performance Low Cost MEMS Gyro Used in 6 Degree of Freedom Inertial Navigation System (DOF INS)

2011 ◽  
Vol 2011 (1) ◽  
pp. 000627-000634
Author(s):  
D. DeRoo ◽  
K. Shcheglov ◽  
M. Inbar ◽  
D. Smukowski ◽  
P. Zappella ◽  
...  
Keyword(s):  
High Performance ◽  
Low Cost ◽  
High Vacuum ◽  
High Volume ◽  
High Yield ◽  
Test Results ◽  
Batch Fabrication ◽  
Mems Gyroscopes ◽  
Commercial Applications ◽  
The Military

Sensors in Motion Inc. is developing a navigation grade 6 DOF MEMS INS using its proprietary and patented technologies. The military is investing in INS and IMU technology which can answer its needs as well as provide the baseline for hundreds of other DOD and commercial applications which need a C-swap sensitive utility. SIM’s technology for MEMS gyros was conceived to address past problems associated with MEMS gyroscopes while leveraging the C-swap benefits of high volume, high yield batch fabrication, automated packaging, self-calibration, and thermal compensation. A key requirement for the MEMS Gyroscope is controlled vacuum-levels to obtain high Q devices. Gyro die are packaged using a multilayer package and getter system, which provides and maintains sealed vacuum cavities. Die are assembled into the LCC package using conventional assembly techniques and the package cavity is sealed using an SST 3150 high-vacuum sealing system. The SST system is used to activate a thin-film getter layer on the package lid before reflow of the solder seal. Resulting pressure levels have been determined by characterizing packaged but unlidded sensor die in a vacuum chamber. The package material, process flow and test results are summarized and reviewed. Tooling, process parameters, and test techniques are explained.

The Effect of Fly Ash on Water Transport of Concrete in Dry State

2011 ◽  
Vol 335-336 ◽  
pp. 1190-1194
Author(s):  
Xiong Wen Zhang ◽  
Lei Jiang ◽  
Guan Guo Liu
Keyword(s):  
Fly Ash ◽  
Water Transport ◽  
High Performance ◽  
Test Results ◽  
Paper Test ◽  
Environment Friendly ◽  
Promising Solution ◽  
Long Term Performance ◽  
Term Performance

Water transport is an important parameter that affects the long term performance and degradation of concrete greatly. Nowadays, adding fly ash is a promising solution to achieve high-performance, low-price and environment-friendly concrete. To characterize the effect of fly ash on water transport of concrete, especially in dry state, moisture variations and microstructure of concrete with different mix proportions were studied in this paper. Test results reveal that fly ash will increase the porosity of early curing concrete, the higher porosity leads to a faster evaporation, which accelerates the transport of water in cement based materials.

scholarly journals Hotel Guests’ Psychological Distance of Climate Change and Environment-Friendly Behavior Intention

2021 ◽  
Vol 19 (1) ◽  
pp. 16
Author(s):  
Wansoo Kim ◽  
Chen Che ◽  
Chul Jeong
Keyword(s):  
Climate Change ◽  
Conceptual Model ◽  
Quantitative Data ◽  
Online Survey ◽  
Behavioral Responses ◽  
Psychological Distance ◽  
Test Results ◽  
Environment Friendly ◽  
Behavior Intention ◽  
People’S Perceptions

Climate change is certainly a global problem that negatively affects all nations, and thus all humans, on the globe. Nevertheless, little is known about people’s perceptions of climate change and its effects on people’s attitudinal and behavioral responses to climate change. The present study successfully addressed how hotel guests’ environment-friendly behavior intention is formed through their self-perception as a member of the global community and their psychological distance of climate change. An online survey was used to collect quantitative data from hotel guests to verify the hypotheses. Our test results supported all the hypotheses in our conceptual model. Consequently, the findings of this study satisfactorily explained how hotel guests form their intention to engage in environment-friendly behaviors while they are staying at hotels.

scholarly journals Electric Power Generation from Low Head Simple Turbine for Remote Area Power Supply

2015 ◽  
Vol 74 (5) ◽  
Author(s):  
Erinofiardi Erinofiardi ◽  
Muhammad Syaiful ◽  
Adhy Prayitno
Keyword(s):  
High Efficiency ◽  
Remote Area ◽  
Test Results ◽  
Environment Friendly ◽  
Large Power ◽  
Power Stations ◽  
Grid Connection ◽  
Low Head ◽  
High Head ◽  
The Relationship

Over recent years, there has been an explosive growth of interest in the development of micro-hydropower generationturbine based on low head. Initial investment in building huge dams and large power stations is needed for high head turbine, beside these large dams are not environment friendly. Particularly in lower head, screw turbine is suitable for environment reason where this turbine has high efficiency, relatively lower cost and low environmental impact. Screw turbine can be applied in remote area which has water resource and no grid connection available. This paper reports experimental results examining the relationship between rotation speed and power. Laboratory scale of screw turbine is made by using locally available materials. Test results show that different speed of generator caused by different diameter of pulleys has great discrepency. 

scholarly journals Study the Using of Reed Mats in Asphalt Pavement Layers

2018 ◽  
Vol 4 (2) ◽  
pp. 346 ◽  
Author(s):  
Lamia Abdul Jaleel Ahmed ◽  
Ammar Fakhir Sabri
Keyword(s):  
Service Life ◽  
Asphalt Pavement ◽  
Permanent Deformation ◽  
Test Results ◽  
Environment Friendly ◽  
Asphalt Mixes ◽  
Complete Failure ◽  
Deformation Test ◽  
Pavement Layers ◽  
C 50

During the service life, the asphalt pavement layers subjected to various detrimental types of distresses such as permanent deformation, fatigue, stripping and shoving which lead to the complete failure of the pavement. In Iraq roads the permanent deformation (rutting) is the importance distresses which cause impact on the highway performance and reducing the service life of the pavement. The research aims to utilize locally available materials and environment friendly as reinforcement layer. The program of this research include preparing asphalt mixes represent surface layer by using locally available materials and using the reinforcement layer which made of reed. The permanent deformation test has been done with three temperatures (40˚C, 50˚C and 60˚C) and four locations of the reed mats. The test results of the wheel- Track for the rutting measurement showed that the rut depth decrease in reinforcement layers as compared with unreinforcement layers for all temperature testing. The reed netting embedded bottom and middle of wearing layer has the best amount of improvement (75%, 84% and 85%).

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