Exploratory Investigation of Layered Fabrication Applied to Construction Automation

1995 ◽  
Author(s):  
Joseph Pegna
Keyword(s):  
Material Processing ◽  
Rapid Prototyping ◽  
Manufacturing Industry ◽  
Layered Manufacturing ◽  
Bulk Materials ◽  
Productivity Improvement ◽  
New Techniques ◽  
Construction Automation ◽  
Exploratory Investigation ◽  
Robotic Tools

Abstract After more than a decade of research in construction automation, robotic tools have brought little if any productivity improvement to the industry. In this paper, we argue that automation which applies to most manufacturing industry does not translate effectively to construction which is limited not by labor, but by process. We propose a radical departure from generally accepted concepts in construction automation and demonstrate that new techniques of layered manufacturing can be applied effectively to construction. In the process, we also modified material processing of cement to adapt it to the requirements of rapid prototyping. We illustrate our purpose with sample structures manufactured by incremental deposition of reactive bulk materials (cement and Silica in this instance).

scholarly journals Productivity Improvement by using Time Study Analysis and Modern Trends in Manufacturing Industry

2020 ◽  
Vol 4 (9) ◽  
pp. 75-79
Keyword(s):  
Material Handling ◽  
Manufacturing Industry ◽  
Manufacturing Sector ◽  
Maximum Efficiency ◽  
Maximum Output ◽  
Time Study ◽  
Work Study ◽  
Work Process ◽  
Productivity Improvement ◽  
Time Required

The productivity of any organization can be increased by optimizing the work process. Low productivity of workers is one of the reason behind the delay in delivery in manufacturing sector we know that in manufacturing sector labor is prominent thing. Improving the productivity means to make the best possible use of available resources and achieve maximum output. This paper focuses on the productivity of machine as well as labor by using fixtures, updated systematic layout and use of material handling equipment. This paper also covers the, what is productivity, which factors are affecting on productivity and efficiency. Maximum efficiency or productivity is trademark of any successful organization The objective of this paper is to identify the problem in medium scale industry due to time and effort required for any operations is high To tackle and understand a detailed analysis regarding processes using time study and work study. Due to implementation of all the measures the productivity of an organization is increases resulting in reduced effort and time required for operation and all operations done optimally.

scholarly journals Analysis of Stresses in a Tapered Roller Bearing Using Three-Dimensional Photoelasticity and Stereolithography

Materials ◽  
2019 ◽  
Vol 12 (20) ◽  
pp. 3427
Author(s):  
Filipe Gomes Vieira ◽  
Alexandre S. Scari ◽  
Pedro Américo Almeida Magalhães Júnior ◽  
Jordana S. R. Martins ◽  
Cristina Almeida Magalhães
Keyword(s):  
Rapid Prototyping ◽  
Data Storage ◽  
Roller Bearing ◽  
Three Dimensional ◽  
New Techniques ◽  
Tapered Roller Bearing ◽  
Photographic Images ◽  
Final Assembly ◽  
Tapered Roller ◽  
Digital Photoelasticity

Digital photoelasticity is an important segment of optical metrology for stress analysis by digital photographic images. Advances in digital image processing, data acquisition, standard recognition and data storage allow the utilization of computer-aided techniques in the automation and improvement of the digital photoelastic technique. The objective of this study is to develop new techniques using 3D rapid prototyping with transparent resins in digital photoelasticity. Some innovations are proposed (e.g., a tapered roller bearing built with 3D rapid prototyping with transparent resin and the final assembly with the specimens prototyped separately). A metrology study is carried out with the new techniques developed.

Application of Dynamic Masking on Rapid Prototyping

2008 ◽  
Vol 594 ◽  
pp. 261-272
Author(s):  
Chien Nan Chen ◽  
Sheng Jye Hwang ◽  
Huei Huang Lee ◽  
Durn Yuan Huang
Keyword(s):  
Material Processing ◽  
Liquid Crystal ◽  
Rapid Prototyping ◽  
Visible Light ◽  
Laser Scanning ◽  
Uv Light ◽  
Liquid Crystal Display ◽  
Digital Light Processing ◽  
Uv Curable ◽  
Main Components

In rapid prototyping (RP) technologies, curing of UV-curable photopolymers is mainly achieved by the application of laser scanning with limited fabrication speed. The dynamic masking approach can improve the fabrication speed; however, current researches and available systems cure photopolymers with visible light rather than UV light. In this research, we have attempted to develop a UV dynamic masking RP system by implementing digital micro-mirror device (DMD) from digital light processing (DLP) technology and TFT liquid crystal display (LCD) panel. A DLP projector was disassembled and the main components were then recombined to form a dynamic mask generator. Thus, this study has shown the feasibility of obtaining a UV dynamic masking RP system that may be integrated for a UV-curable material processing.

Productivity improvement using lean manufacturing in manufacturing industry of Northern India

2018 ◽  
Vol 67 (8) ◽  
pp. 1394-1415 ◽  
Author(s):  
Jagdeep Singh ◽  
Harwinder Singh ◽  
Gurpreet Singh
Keyword(s):  
Lean Manufacturing ◽  
Manufacturing Industry ◽  
Management Approach ◽  
Successful Implementation ◽  
Productivity Improvement ◽  
Content Type ◽  
Manufacturing Technique ◽  
Northern India ◽  
Lean Tools ◽  
Manufacturing Environments

Purpose The purpose of this paper is to uncover the significance of lean manufacturing technique in manufacturing environments. Design/methodology/approach Lean manufacturing is a management approach focused on incremental improvements in operations. Different lean strategies are being utilized by manufacturing industry to improve the performance of current manufacturing system processes. This study attempts to evaluate the performance of different lean manufacturing tools in the manufacturing industry of northern India. The importance level of different lean tools, important benefits achieved after successful implementation of lean manufacturing approach and benefits occurred after implementation of different lean tools have been identified. A questionnaire survey in the case company has been performed and the most important element of lean manufacturing has been implemented. Findings Results explicitly depict that just-in-time manufacturing is the most important element of lean manufacturing. Results indicate the net savings of rupees 242,208 annually after implementing lean manufacturing technique in a case company. Originality/value The paper demonstrates the practical application of lean technique showing how it can bring real breakthroughs in saving cost in the manufacturing industry.

Special Issue on Rapid Prototyping

2012 ◽  
Vol 6 (5) ◽  
pp. 569-569 ◽  
Author(s):  
Koichi Morishige ◽  
Masahiro Anzai ◽  
Hiroyuki Narahara
Keyword(s):  
Rapid Prototyping ◽  
High Strength ◽  
Production Equipment ◽  
Processing Method ◽  
Layered Manufacturing ◽  
Special Issue ◽  
Cross Sectional ◽  
3D Cad ◽  
Material Development ◽  
Cad Cam

Layered manufacturing is the generic name for a processing method used to obtain an actual model by calculating cross-sectional shapes from 3D CAD data and stacking these shapes. Because it can realize any shape without needing skills for devising a processing method and fabricating fixtures, layered machining is expected to realize 3D printing that enables even inexperienced or amateur operators to obtain actual 3D shapes. Since the model such as injection molding can be fabricated without using dies and molds, layered manufacturing is now called rapid prototyping (RP). Since ever manufacturing of high-strength materials has become available, RP applications have been deployed in areas from models for more confirmation of shape to functional models attached to prototypes such as engines and used for test runs. In addition, the new concepts called rapid manufacturing (RM) and rapid tooling (RT), which are used in the manufacture of low-volume products and production equipment, have been proposed and implemented. This special issue focuses on RP technology. Among its many interesting papers are those that focus on new fabrication techniques, material development for RP, CAD/CAM systems for RP, new RP systems, and applications for RP. We are certain that you will find this issue both interesting and informative. We thank the authors for their generous cooperation and the editing staff for its many contributions.

Rapid Prototyping Machine in Teaching Practice and Application

2013 ◽  
Vol 291-294 ◽  
pp. 2960-2962
Author(s):  
Wei Wei Li ◽  
Lei Yu
Keyword(s):  
College Students ◽  
Rapid Prototyping ◽  
Market Economy ◽  
Manufacturing Industry ◽  
Teaching Practice ◽  
Development Cycle ◽  
Product Development Cycle ◽  
Rapid Prototyping Manufacturing ◽  
Complex Parts

In order to adapt need of market economy development,to shorten the product development cycle,improve the ability to manufacture complex parts,rapid prototyping manufacturing technology to become a new direction in the development of the manufacturing industry,many colleges and universities have carried out the rapid prototyping manufacturing research, mechanism, material professional college students will become the main force to promote technology applications.Will therefore rapid prototyping machines used in teaching training segment, to standardize the experimental behavior of the students, played an important role in the overall quality of training of students and improve ability.

Application of Rapid Prototyping Technology in Automobile Manufacturing Industry

2014 ◽  
Vol 533 ◽  
pp. 106-110
Author(s):  
Peng Cheng Li ◽  
Shuang Cheng Huang
Keyword(s):  
Rapid Prototyping ◽  
Manufacturing Industry ◽  
Development Cost ◽  
Design Development ◽  
Automobile Manufacturing ◽  
3D Cad ◽  
Automobile Design ◽  
Development Cycle

Rapid prototyping technology manufactures the product prototype can be generated directly from 3D CAD data and can be regenerated easily after the design was modified. This paper introduces the principle of rapid prototyping technology and the applications of rapid prototyping technology in automobile design, development and production. It is notable that the rapid prototyping technology is an effective tool to reduce the development cost of automobile products and shorten the development cycle.

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