IMPROVEMENT OF STAND JIG SEALER AND ITS INCREASED PRODUCTION CAPACITY

This paper has the objective to prove that improvement of Stand Jig Sealer can lead to the cycle time target as part of Improvement efforts and its Productivity. Prior researches through prior journals both classics journal such as Quesnay (1766) and Solow (1957) and updated journal such as Reikard (2011) researches, are mentioned and elaborated. Precisely, the research is narrowed down and specified into automotive industry and eventually the software related of SPSS and Structural Equation Modeling ( SEM ). The analysis and its method are conducted through the calculation working time. The mentioned calculation are reinforced with the hypothesis test using SPSS Version 19 and involve parameters of production efficiency, productivity calculation, and the calculation of financial investments. The results obtained are augmented achievement of cycle time target ≤ 80 seconds posterior to improvement stand jig sealer. The result from calculation of SPSS-19 version comprise the following aspects :the one-sided hypothesis test is rejection of Ho:μ≥80 seconds, the correlation rs=0.84, regression y = 0.159+0.642x, validity R table = 0.4438, reliability value of Cronbach’s alpha = 0.885>0.70, independence (Chi Square) Asymp. Sig=0.028<0.05, 95% efficiency, increase productivity 11%, financial analysis (NPV 2,340,596>0, PI 2.04>1, IRR 45.56%>i=12.68%, PP=1.86). The Mentioned calculation results support the hypothesis and ultimately align with the objective of this paper to prove that improvement of Stand Jig Sealer and its relation toward the cycle time target. Precisely, the improvement of production capacity of PT. Astra Daihatsu Motor.


Introduction
The background of the improvement plan in this paper refers to an increase in production capacity characterized by the acceleration of cycle time target.Precisely, the improvement is needed in company in Productivity of Corporate Management of Mcinnes (1984), and in particular in the Automotive Industry.This paper discusses the related theory and concept, that eventually is elaborated by the empirical study in one of automotive companies in Indonesia.To begin with, the improvement is needed in the Automotive Industry that is triggered by the fierce competition that require extensive effort to obtain market share.The precise research on both aspects have been elaborated by Fournier and Agard (2007) through the prior research of Womack et al (1991) that further develop the need of final product variety and complex management.Simultaneously, Miltenburg (1989) elaborated the situation of customers that require to receive product as fast as possible while obtaining competitive price.
In the empirical study of PT.Astra Honda Motor (AHM) refers to Current condition on Sub Assembly Engine Hood that is still exceeding the target with the highest current cycle time and simultaneously is still going idle time for several work processes.Therefore, there is the need to improve work processes for this area pertaining the Current Cycle Time in this empirical study.Two previous studies on the same topic is the analysis of investment feasibility infra red sensor transceiver to the endurance test in AHM and feasibility analysis of investment in production capacity of die making PT.Astra Daihatsu Motor(ADM), the mentioned method utilizes use business feasibility analysis study of the technical and financial side.However, this paper analyzes feasibility of combining business with SPPSS statistical methods and eventually SEM in order to obtain results with accurate analysis.

Literature Review
The literature review pertaining Productivity is one of the theories and concepts that are elaborated in this paper.Tangen (2002) refers to Quesnay (1766) as the first one who introduced the terminology of Productivity, in Journal de l'Agriculture over two centuries ago.
Productivity is considered as one of the basic variables governing economic production activities (Tangen, 2002).At the same time, productivity is also seen as one of the most vital factors affecting a manufacturing company's competitiveness.

Research Methodology
The method of data collection researchers directly using stop-watches, and from the results researchers testing the adequacy of the data, the uniformity of data, SPSS test, eventually SEM, and determine the efficiency, productivity of manpower, and perform financial analysis calculations.

Results and Analysis
The results of cycle time after stand jig sealer improvement:   The graph above shows a comparison tact time production in May (before the improvement done) with Tact time production in November (after the improvement done).This is shows that stand jig sealer improvement helped decrease production time.

Measurement Results of Working Time Stopwatch
Here are the results of measurement of working time with Stopwatch (stopwatch time study) taken with a sampling of 20 times in the area of Sub Assembly Engine Hood:

Test Data Adequacy With Stopwatch
Terms: 95% confidence level and the degree of accuracy of 5%, obtained N '= 0:15 time of observation.From the above calculation shows the number of observations that should be implemented (N ') is smaller than the number of observations that have been made (N = 20).The conclusion is the number of observations that have been carried out 20 times giving 95% confidence level and 5% level of accuracy.Efficiency of the calculation above, it appears that an increase in efficiency.This means that stand jig sealer improvement helps increase production efficiency.

Uniformity Test Data With Stopwatch
To know that the population sample data used has a normal balance of value -average at 95% confidence level, test results of the uniformity of data is as follows:

Productivity Calculation
The calculation method to locate manpower productivity in the welding shop to compare the productivity before and after improvement: From manpower productivity calculations above, the difference after and before there was an increase of 11%.This means that stand jig sealer improvement can help increase the productivity of manpower.

Net Present Value (NPV)
NPV is calculated for a period of 5 years with i = 12.68%

Internal Rate of Return (IRR)
For analytical calculations Internal Rate of Return (IRR) is as follows:

CONCLUSION
The conclusion in this paper comprise two major aspects.The first one refers to the conclusion in term of theory and concept.The second one refers to the conclusion in term of the empirical study of one of automotive industries in Indonesia.First, for the conclusion that refers to the theory and concept, it is indispensable to refer to the original concept of productivity as triggered by Quesnay (1766), and other classics journal including Solow (1957)

DOI: 10
.1051/ C Owned by the authors, published by EDP Sciences,

Figure 1 .
Figure 1.Flowchart of Research Methodology EPJ Web of Conferences

Figure 2 .Figure 3 .
Figure 2. Graph Before and After Work Process Improvement Figure 2 is a graph showing the comparison of working time before and after improvement.This means that stand jig sealer improvement helps to reduce waiting time 48%.Here are the results of improvement tool sealer:

Figure 4 .
Figure 4. Graph Tact Time Production Months for May 2012 and November 2012
Reikard (2011)elaborated productivity in term of total productivity factor.Precisely, Reikard mentioned Since the pioneering work ofSolow [1957], it has been recognized that a substantial share of economic growth is comprised by technical advance, and that over long periods of time, the rate of technical advance can be approximated by the production function residual.The residual, generally called total factor productivity, is of course not a perfect measure of technology, since at shorter horizons it is extremely variable.Chinda (2010) refers to several concepts of Productivity.Precisely, Chinda (2010) mentions that Productivity is one of the most common measures of an organization's competitiveness.It has often been cited as a key factor in industrial performance, and actions to increase it are (Loke, 2001) and (Savery, 1998), 11.Job allocation, according to Bell (1988) and (Peter et al., 2007); 12. Feedback, according to Pritchard (1995) ;13. Safe workplace, according to Thailand Productivity Institute (2008b) and Sales Creators (2009); 14.Supervision, according to Bell(1988); 15.Equipment effectiveness, according to (Thailand Productivity Institute, 2008c).16.

Table 1 .
Comparison of Working Post and Cycle Time Before and After Improvement

Table 3 .
Data Results using SPSS-version 19

Table 4 .
Cost Improvement

Table 5 .
Net Present Value for 5 years (i=12.68%)Discount factor obtained from the formula: PV = From the table calculation above, the amount obtained during the 5-year NPV is greater than 0 or a positive NPV.

Table 6 .
Internal Rate of Return (IRR) for 5 years From the table above, formula to calculate IRR using Microsoft Excel is equal to 45.56%.IRR calculation results in Microsoft Excel use interest rate i = 12.68%, because of IRR value is greater than interest rate therefore investment is feasible.

Table 7 .
Payback Period (PP) for 5 years Chinda (2010)conclusion of this paper refer to the 27 productivity attributes that are elaborated byChinda (2010).Those27 attributes are indispensable to keep track on the benefit and the focus on each company on what is or are their attributes to be focused on, based on the purpose, vision and mission of the company or other related unit of analysis.Second, for the conclusion that refer to the empirical study; it is concluded that -Improvement stand jig sealer helps achievement of cycle time target ≤ 80 seconds, which means achievement of production capacity in sub assembly engine hood.-The results of stand jig sealer improvement is reduce the waiting time of work processes as much as 48% -The results of analysis SPSS version 19 for dataworking time and production output after improvement, showing that all the criteria data meet the target cycle time ≤ 80 seconds, valid, reliable.-The results of production efficiency with stand jig sealer improvement is increased 7% -The productivity of manpower after stand jig sealer improvement an increase of 11% -The results calculation of the financial analysis of stand jig sealer improvement obtained: 1.Net Present Value (NPV) 2,340,597> 0 2. Profitability Index (PI) 1:16> 1 3. Internal Rate of Return (IRR) 45.56%> i = 12.68% 4. Payback Period (PP) can be achieved for 1 year 9 months It is concluded that from the results of financial analysis, stand jig sealer application is viable.