Development of an Intelligent System for Flame Straightening Panel Structures—Devices and Algorithms to be Used with Robots

1988 ◽  
Vol 4 (04) ◽  
pp. 219-227
Author(s):  
Koichi Masubuchi ◽  
Akihiko Imakita ◽  
Hiroshi Miyachi ◽  
Masayasu Miyake
Keyword(s):  
Research Program ◽  
Intelligent System ◽  
Years Of Experience ◽  
Skilled Workers ◽  
Shipbuilding Industry ◽  
Steel Panel ◽  
Intelligent Machine ◽  
Ultimate Objective

Distortions which occur during the assembly of steel panel structures can be removed by flame straightening—a technique that has been used for a number of years in the shipbuilding industry. Correct skill to perform this technique is acquired by many years of experience. The industry is concerned now about the decreasing number of skilled workers. What is needed to improve the situation is to develop a robot capable of not necessarily replacing a human worker, but helping a human worker. This paper discusses results obtained thus far in a research program of which the ultimate objective is to develop an intelligent machine capable of performing flame straightening on a deck of a ship superstructure. Discussions are given on (a) a concept of an algorithm to determine heating conditions, and (£>) sensors needed for "in-process" sensing and controlling the robot movements.

Prediction of Deformation to Thin Ship Panels for Different Heat Sources

2001 ◽  
Vol 17 (02) ◽  
pp. 52-61
Author(s):  
H.C. Kuo ◽  
L.J. Wu
Keyword(s):  
Plate Thickness ◽  
Prediction Method ◽  
Steel Plates ◽  
Data Series ◽  
Heat Sources ◽  
Skilled Workers ◽  
Forming Process ◽  
Shipbuilding Industry ◽  
On Line ◽  
The Moment

The increasing use of thin steel plates in manufacturing and the shipbuilding industry has given rise to several issues: massive deformation problems, the need for many skilled workers, and the expense of costs for straightening in on-line processes. This study explains the results of experiments and predicts techniques for the control of deformation in thin panels. The objective of this paper is to explain the use of the G(1,1) Grey method to predict deformation. Bending and buckling are usually the dominant modes of deformation in heat working. It follows angular deformation. De- formation due to different heat sources is discussed. In this paper, laser and torch are used in different constraints, for example, free-free beam and cantilever beam. Many important factors include tiny adjustments during the heat forming process, such as changing the moment speed, intensity of input heating, plate thickness and heating path, to improve manufacture techniques and to predict deformation by data series. For the prediction of deformation, a method to estimate input heating of laser and torch is introduced. The proposed prediction method can be used during the forming process simply and efficiently.

Benefits of the National Shipbuilding Research Program to the Navy and the Industrial Base: Part 3—Navy Perspective

1986 ◽  
Vol 2 (04) ◽  
pp. 209-216
Author(s):  
W. L. Christensen
Keyword(s):  
Research Program ◽  
Shipbuilding Industry ◽  
Industrial Base ◽  
Ship Construction ◽  
Ship Repair

This paper reviews the benefits of the National Shipbuilding Research Program (NSRP) to the shipbuilding industry, and more specifically, its benefits to the Navy and the shipbuilding and ship repair mobilization base. The paper also identifies significant additional benefits that the Navy can gain in the next few years if the NSRP continues not only on its present course of solving productivity problems in building new ships, but also addresses additional targets of opportunity in solving productivity problems in the overhaul, repair and modernization of Navy ships. The labor part here appears to be an even larger budget item than the labor part of new ship construction.

Improving Shipyard Productivity Through the Combined Use of Process Engineering and Industrial Engineering Methods Analyses Techniques

1986 ◽  
Vol 2 (01) ◽  
pp. 42-45
Author(s):  
Tommy L. Cauthen
Keyword(s):  
Production Process ◽  
Research Program ◽  
Mass Production ◽  
Process Engineering ◽  
Productivity Improvement ◽  
Shipbuilding Industry ◽  
Engineering Technique ◽  
Analysis Technique ◽  
Combined Use ◽  
Production Techniques

Despite the obvious compromises to efficiency that must be made when producing small quantities, the shipbuilding industry sometimes rules out or fails to consider some of the efficient techniques and methodologies of mass production manufacturing. In this paper a comparison and contrast is made between the methods of mass production and small quantity manufacturing. Also revealed in this paper are the benefits from the use of a mass production process engineering technique and a methods analysis technique during the performance of the National Shipbuilding Research Program SP-8 Panel Task ES-8-21. The use of a mass production process engineering technique is explained as a solution to a methods problem of excessive travel for tools in shipyard equipment installation by outside machinists. The paper concludes with a promotion of this specific application of mass production methodology in shipbuilding and a promotion of the re-evaluation of mass production techniques by shipyards as a vehicle for productivity improvement.

scholarly journals Effective Back Channel Response to User Queries using Banking Bot Artificial Intelligent System

2019 ◽  
Vol 8 (12) ◽  
pp. 3171-3174
Keyword(s):  
Intelligent System ◽  
Artificial Intelligent ◽  
Channel Response ◽  
Intelligent Machine ◽  
User Friendly ◽  
User Queries ◽  
Bot Project

The banking bot project is to create an Intelligent machine for banks to read the users queries and respond at a faster rate. The aim of the project is to develop a system for banks where users/ customers can ask any bank related questions like loan, services, account, schemes, policy etc. The application will be developed for web users. The machine recognizes the queries and answers appropriately. Even if the user does not frame sentence properly, system will understands the query and answer accordingly based on the frequent matching datasets. There is no specific format to follow for the user to ask questions. This project helps to create a user friendly Artificial Intelligent system to resolve user’s basic queries

Discussion to Rinehart, Brasher, and Christensen: “Benefits of the National Shipbuilding Research Program to the Navy and the Industrial Base”

1986 ◽  
Vol 2 (04) ◽  
pp. 217-224
Author(s):  
Perry W. Nelson
Keyword(s):  
Research And Development ◽  
Research Program ◽  
Important Paper ◽  
Shipbuilding Industry ◽  
Industrial Base ◽  
Competitive Edge ◽  
Reduced Costs

The authors of this most important paper are to be commended on their excellent presentation of a most important topic. The paper carefully identifies areas where research and development have resulted in improved productivity and reduced costs. The incentives to such development are the greatest when they result in the user gaining a competitive edge. In the case of the shipbuilding industry, the Navy's effort to acquire a 600-ship navy has provided such an incentive. As has been pointed out in the paper, the industry has responded with an impressive number of improvements.

The National Shipbuilding Research Program, 1971-1976

1976 ◽  
Vol 13 (04) ◽  
pp. 371-380
Author(s):  
John J. Garvey
Keyword(s):  
Federal Government ◽  
Research Program ◽  
Material Handling ◽  
Innovation Process ◽  
Government Subsidy ◽  
Shipbuilding Industry ◽  
Production Methods ◽  
Manufacturing Automation ◽  
The Government

This paper is a description of the organization and operation of a unique research program sponsored by the Federal Government in full partnership with the U. S. shipbuilding industry. The objective of the program is to improve the productivity of this industry and to reduce Government subsidy. Since the program began in 1971, almost 90 projects have been funded by the Government at a cost of $15 million. In addition, the industry has contributed in manpower, material, and facilities in excess of $5 million. The bulk of the projects involve development and demonstration of production technology for shipbuilding. These include welding, material handling, ship outfitting, production methods, manufacturing automation, and production-oriented design. In addition to describing the technical and organizational content of the program, the paper is intended to be a case study of a successful government/industry approach to improve the total innovation process within a mature industry.

Study of Accuracy Control of Hull Structure

1994 ◽  
Vol 10 (01) ◽  
pp. 51-58
Author(s):  
Yasuhisa Okumoto ◽  
Shin-ichi Matsuzaki
Keyword(s):  
Present Situation ◽  
Accuracy Control ◽  
Skilled Workers ◽  
Shipbuilding Industry ◽  
Automated Production ◽  
Deformation Simulation ◽  
Hull Structure ◽  
Increase Productivity ◽  
Human Skills ◽  
High Level

Mechanization and automation have been accelerated in the Japanese shipbuilding industry, corresponding to the present situation of a decreasing number of skilled workers and the difficulty in recruiting new workers. In order to effectively increase productivity through automation, the current fabrication system has to be reviewed so that it will be suitable to mechanized/automated production. As a result of the survey it was confirmed that geometric inaccuracy of each member at the fabrication and assembly stage precludes introduction of the system and increases the number and variety of adjustments necessary. Accordingly, this paper proposes a new concept to keep accuracy at a high level: numerical simulation of deformation due to cutting, welding, etc., and elimination of the scattering of human skills by mechanization. It also shows some examples of deformation simulation of the plate and block due to gas cutting and welding.

Optimization of a Working Route Using the Genetic Algorithm

2000 ◽  
Vol 16 (01) ◽  
pp. 40-45
Author(s):  
Yasuhisa Okumoto
Keyword(s):  
Genetic Algorithm ◽  
Production Management ◽  
Skilled Workers ◽  
Shipbuilding Industry ◽  
Production Management System ◽  
Sample Data ◽  
Computer Based ◽  
Working Procedure ◽  
Working Situation ◽  
Optimum Working

ABSTRACT Since the working situation of the Japanese shipbuilding industry is changing due to the decrease of skilled workers, the production management system should be improved as suitable for skill-independent production. Under such conditions, it is important to indicate working details to non-skilled workers, which contain so-called 4W1H - Who, When, Where, What, How - including the working procedure. In this report, a working route simulation to achieve a minimum working period is carried out using the genetic algorithm (GA) for assembly welding or block painting work on a ship hull as an example. This defines the job sequence of each worker in a block. A personal computer based program (C++) was developed and applied. The calculation result of the sample data showed a good result to get optimum working route to have minimum working period.

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