Data based model to estimate subgrade moisture variation case study: Low volume pavement in North Texas

2015 ◽  
Vol 3 ◽  
pp. 48-57 ◽  
Author(s):  
Mahsa Hedayati ◽  
Sahadat Hossain
Keyword(s):  
North Texas ◽  
Moisture Variation ◽  
Low Volume

SPC in Low-Volume Manufacturing: A Case Study

1991 ◽  
Vol 23 (4) ◽  
pp. 287-295 ◽  
Author(s):  
George F. Koons ◽  
Jeffery J. Luner
Keyword(s):  
Low Volume

A review on advancements in applications of fused deposition modelling process

2020 ◽  
Vol 26 (4) ◽  
pp. 669-687 ◽  
Author(s):  
Sathies T. ◽  
Senthil P. ◽  
Anoop M.S.
Keyword(s):  
Additive Manufacturing ◽  
Research Work ◽  
Rapid Tooling ◽  
Future Research ◽  
Fused Deposition Modelling ◽  
Content Type ◽  
Fused Deposition ◽  
Low Volume ◽  
Customized Products

Purpose Fabrication of customized products in low volume through conventional manufacturing incurs a high cost, longer processing time and huge material waste. Hence, the concept of additive manufacturing (AM) comes into existence and fused deposition modelling (FDM), is at the forefront of researches related to polymer-based additive manufacturing. The purpose of this paper is to summarize the research works carried on the applications of FDM. Design/methodology/approach In the present paper, an extensive review has been performed related to major application areas (such as a sensor, shielding, scaffolding, drug delivery devices, microfluidic devices, rapid tooling, four-dimensional printing, automotive and aerospace, prosthetics and orthosis, fashion and architecture) where FDM has been tested. Finally, a roadmap for future research work in the FDM application has been discussed. As an example for future research scope, a case study on the usage of FDM printed ABS-carbon black composite for solvent sensing is demonstrated. Findings The printability of composite filament through FDM enhanced its application range. Sensors developed using FDM incurs a low cost and produces a result comparable to those conventional techniques. EMI shielding manufactured by FDM is light and non-oxidative. Biodegradable and biocompatible scaffolds of complex shapes are possible to manufacture by FDM. Further, FDM enables the fabrication of on-demand and customized prosthetics and orthosis. Tooling time and cost involved in the manufacturing of low volume customized products are reduced by FDM based rapid tooling technique. Results of the solvent sensing case study indicate that three-dimensional printed conductive polymer composites can sense different solvents. The sensors with a lower thickness (0.6 mm) exhibit better sensitivity. Originality/value This paper outlines the capabilities of FDM and provides information to the user about the different applications possible with FDM.

Electrical Submersible Pumping Systems vs. Long Stroke Pumping Units: A Case Study of Economical Comparison in a Low-Volume Well

2015 ◽  
Author(s):  
Alejandro Proaño ◽  
Cesar Gomez ◽  
Roman Molotkov ◽  
Nelly Villacis ◽  
Ana Sola ◽  
...  
Keyword(s):  
Low Volume ◽  
Long Stroke ◽  
Pumping Units

Implementation of hybrid Kanban-CONWIP system: a case study

2017 ◽  
Vol 28 (6) ◽  
pp. 714-736 ◽  
Author(s):  
Dênis Gustavo Leonardo ◽  
Bruno Sereno ◽  
Daniel Sant Anna da Silva ◽  
Mauro Sampaio ◽  
Alexandre Augusto Massote ◽  
...  
Keyword(s):  
Control Systems ◽  
Hybrid System ◽  
Production Control ◽  
Job Shop ◽  
Lean Production ◽  
Shop Floor ◽  
Content Type ◽  
Floor Control ◽  
Low Volume

Purpose Shop floor control systems are generally major points of discussion in production planning and control literature. The purpose of this paper is to investigate how lean production control principles can be used in a make-to-order (MTO) job shop, where the volume is typically low and there is high variety. This paper examines the procedures involved in implementing a constant work-in-process (CONWIP)/Kanban hybrid system in the shop floor environment and also provides insights and guidelines on the implementation of a hybrid system in a high-variety/low-volume environment. Design/methodology/approach The authors review literature on Kanban, CONWIP, and CONWIP/Kanban hybrid systems to analyze how lean production control principles can be used in a MTO job shop. The second part focuses on the process of implementation. Using a case study of a manufacturer of electromechanical components for valve monitoring and controls, the paper describes how the operation is transformed by for more efficient shop floor control systems. Real experiments are used to compare pre- and post-improvement performance. Findings The study shows that the proposed hybrid Kanban-CONWIP system reduced the cycle time and achieved an increase of 38 percent in inventory turnover. The empirical results from this pilot study provide useful managerial insights for a benchmarking analysis of the actions to be taken into consideration by companies that have similar manufacturing systems. Research limitations/implications The statistic generalization of the results is impossible due to the use of a single case method of study. Originality/value This paper provides insights and guidelines on the implementation of a hybrid system in a high-variety/low-volume environment. The literature on real applications of hybrid CONWIP/Kanban by case study is limited.

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