John P.T. Mo

Bio: John P.T. Mo is an academic researcher from RMIT University. The author has contributed to research in topics: Machining & Electrical discharge machining. The author has an hindex of 21, co-authored 194 publications receiving 1542 citations. Previous affiliations of John P.T. Mo include Universiti Tun Hussein Onn Malaysia & Phillip Institute of Technology.

Strategy for the successful implementation of ISO 9000 in small and medium manufacturers

Abstract: States that small‐ to medium‐sized manufacturers are finding the ISO 9000 standards difficult to implement. Discusses a research project which investigates the factors influencing the process of ISO 9000 certification for these manufacturers and identifies the critical issues inhibiting its implementation. Uses the findings of the research project to formulate a strategy, which has been proved successful in a number of cases, to assist small‐ to medium‐sized manufacturing companies in obtaining ISO 9000 certification.

Tactical supply chain planning models with inherent flexibility: definition and review

Abstract: Supply chains (SCs) can be managed at many levels. The use of tactical SC planning models with multiple flexibility options can help manage the usual operations efficiently and effectively, whilst improve the SC resiliency in response to inherent environmental uncertainties. This paper defines tactical SC flexibility and identifies tactical flexibility measures and options for development of flexible SC planning models. A classification of the existing literature of SC planning is introduced that highlights the characteristics of published flexibility inclusive models. Additional classifications from the reviewed literature are presented based on the integration of flexibility options used, solution methods utilized, and real world applications presented. These classifications are helpful for identifying research gaps in the current literature and provide insights for future modeling and research efforts in the field.

Hybrid deflection prediction on machining thin-wall monolithic aerospace components:

Abstract: Thin-wall machining of monolithic parts allows better quality parts to be manufactured in less time This brings advantages, particularly in inventory management and manufacturing efficiency However, due to poor stiffness of thin-wall parts, deformation is more likely to occur in the machining process, which results in dimensional form errors This paper describes a new methodology for prediction of wall deflection during machining thin-wall features with reduced analysis time from weeks to hours The prediction methodology is based on a combination of the finite-element method and statistical analysis It consists of a feature-based approach to parts creation, finite-element analysis of material removal, and statistical regression analysis of deflection associated with cutting parameters and component attributes The prediction values have been validated by machining tests on titanium parts and show good agreement between simulation model and experimental data

Evolution of tool wear and its effect on cutting forces during dry machining of Ti-6Al-4V alloy

Abstract: Variation of cutting forces has been investigated and correlated with the development of tool wear during dry machining of Ti-6Al-4V alloy at cutting speeds of 150 and 220 m/min, respectively. Both the average and maximum flank wear increased more significantly with volume of material removed at higher cutting speed. The tool failure mode is flank wear at both cutting speeds; however, the mechanisms for the excessive flank wear are different. The average width of flank wear reaches the criterion at cutting speed of 150 m/min after 57.2 cm3 of material has been removed as a result of the gradual recession of cutting edge due to crater wear, which led to significant rise of feed force only at the end of tool life. Both average width and maximum width of flank wear exceeds the criteria at cutting speed of 220 m/min after 20.8 cm3 of material has been removed because of severe plastic deformation of cutting edge at the nose radius, which resulted in dramatic increase in all three components of cutting forces at the end of tool life. The cutting edge at the nose radius was pushed up from the flank face in the chip flow direction due to the oversized built-up edge-induced compressive stress applied from the flank face.

I and i

Abstract: There is, I think, something ethereal about i —the square root of minus one. I remember first hearing about it at school. It seemed an odd beast at that time—an intruder hovering on the edge of reality. Usually familiarity dulls this sense of the bizarre, but in the case of i it was the reverse: over the years the sense of its surreal nature intensified. It seemed that it was impossible to write mathematics that described the real world in …

Personal Knowledge: Towards a Post-Critical Philosophy

Abstract: The Study of Man. By Michael Polanyi. Price, $1.75. Pp. 102. University of Chicago Press, 5750 Ellis Ave., Chicago 37, 1959. One subtitle to Polanyi's challenging and fascinating book might be The Evolution and Natural History of Error , for Polanyi is at pains to expunge what he believes to be the false notion contained in the contemporary view of science which treats it as an object and basically impersonal discipline. According to Polanyi not only is this a radical and important error, but it is harmful to the objectives of science itself. Another subtitle could be Farewell to Detachment , for in place of cold objectivity he develops the idea that science is necessarily intensely personal. It is a human endeavor and human point of view which cannot be divorced from nor uprooted out of the human matrix from which it arises and in which it works. For a good while