scholarly journals MONITORING AND IMPROVING ORDER PREPARATION TIME USING CONTROL CHART

2018 ◽  
Vol 46 (1) ◽  
pp. 31-36
Author(s):  
Vukašin Pajić ◽  
Milan Andrejić ◽  
Milorad Kilibarda
Keyword(s):  
Control Chart ◽  
Process Efficiency ◽  
Important Process ◽  
Preparation Time ◽  
Time Component ◽  
Corrective Actions ◽  
Monitoring Performance

One of the most important process during order realisation is goods preparation according to the customer’s order. Order preparation/picking process is only one of the processes that needs to be monitored in order to achieve efficiency. When monitoring performance, usually economical parameters are being observed, although time is equally important factor. There are lots of ways to monitor process efficiency, but in this paper, control chart were used. A two month period was observed with the total of 3468 orders. Aim of this paper was to determine when the uncontrolled process occurred. Also potential causes which led to the uncontrolled process were analysed. Finally, some preventive-corrective actions for reducing or eliminating those causes are provided. Based on the obtained results, it can be concluded that the proposed methodology is very useful for monitoring and improving the time component of the logistics processes.

S.E.M.-T.E.M. Image Comparison

1971 ◽  
Vol 29 ◽  
pp. 132-133
Author(s):  
G. M. Greene ◽  
J. W. Sprys
Keyword(s):  
Electron Microscope ◽  
Low Carbon Steel ◽  
Secondary Emission ◽  
Low Carbon ◽  
Preparation Time ◽  
Actual Surface ◽  
Fine Detail ◽  
Transmission Electron ◽  
Transmission Study ◽  
Large Sections

The present study demonstrates that fracture surfaces appear strikingly different when observed in the transmission electron microscope by replication and in the scanning electron microscope by backscattering and secondary emission. It is important to know what form these differences take because of the limitations of each instrument. Replication is useful for study of surfaces too large for insertion into the S.E.M. and for resolution of fine detail at high magnification with the T.E.M. Scanning microscopy reduces sample preparation time and allows large sections of the actual surface to be viewed.In the present investigation various modes of the S.E.M. along with the transmission mode in the T.E.M. were used to study one area of a fatigue surface of a low carbon steel. Following transmission study of a platinum carbon replica in the T.E.M. and S.E.M. the replica was coated with a gold layer approximately 200A° in thickness to improve electron emission.

Monitoring performance with varying levels of task demand

1963 ◽  
Author(s):  
Glenn R. Hawkes ◽  
Earl A. Alluisi ◽  
Thomas W. Meighan
Keyword(s):  
Task Demand ◽  
Monitoring Performance

Performance Analysis on Eco-friendly Machining of Ti6Al4V using Powder Mixed with Different Dielectrics in WEDM

2020 ◽  
Vol 17 (3) ◽  
pp. 8128-8139
Author(s):  
S. Chakraborty ◽  
S. Mitra ◽  
D. Bose
Keyword(s):  
Metal Removal ◽  
Removal Rate ◽  
Machining Process ◽  
Process Efficiency ◽  
Machining Parameters ◽  
Dielectric Fluids ◽  
High Emission ◽  
Pulse On Time ◽  
Pulse Off Time ◽  
Wedm Process

The recent scenario of modern manufacturing is tremendously improved in the sense of precision machining and abstaining from environmental pollution and hazard issues. In the present work, Ti6Al4V is machined through wire EDM (WEDM) process with powder mixed dielectric and analyzed the influence of input parameters and inherent hazard issues. WEDM has different parameters such as peak current, pulse on time, pulse off time, gap voltage, wire speed, wire tension and so on, as well as dielectrics with powder mixed. These are playing an essential role in WEDM performances to improve the process efficiency by developing the surface texture, microhardness, and metal removal rate. Even though the parameter’s influencing, the study of environmental effect in the WEDM process is very essential during the machining process due to the high emission of toxic vapour by the high discharge energy. In the present study, three different dielectric fluids were used, including deionised water, kerosene, and surfactant added deionised water and analysed the data by taking one factor at a time (OFAT) approach. From this study, it is established that dielectric types and powder significantly improve performances with proper set of machining parameters and find out the risk factor associated with the PMWEDM process.

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