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| An insightful perspective - manufacturing technologies |
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| Sumita Kale | |||
| Friday, 07 November 2008 00:00 | |||
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Exposure to global competition and ambitious market plans calls for adoption of modern advanced techniques in manufacturing. The rapid pace of change makes the definition of ‘advanced’ manufacturing technologies (AMT) a moving target. When a new AMT is introduced, the shift in technology demands justification for the huge capital investment required. AMT has generally required leadership taking ‘judgment calls’. At every stage, sourcing, assessing and purchasing new technology involve decisions fraught with uncertainty.
Quantitative Reduction in manpower costs Reduction in operating costs Reduction in overhead costs Quantitative Quality improvement Operator comfort Safety improvement
First principle - investment in AMT is justified when the ‘hurdle rate’ (expected benefit of investment) is equal to the cost of investment (financial + running cost)Second principle - the present manufacturing process (without AMT) needs to be valued lower to factor in the currently absent qualitative benefits, when comparing with the future process under evaluation (with AMT)Third principle - the strategic benefits provided in a future process (with AMT) need to be valued higher, when comparing with the present process (without AMT) ‘Loss aversion’ means tendency for people to strongly prefer avoiding losses than acquiring gains. Quantification of the money value of a utility is possible when the decision maker views the loss or discount associated with not having the particular utility. For example, looking at a qualitative feature which has no established market value, it is easier for a respondent to estimate the discount needed for a commodity without that feature, rather than to estimate the ‘additional’ (premium) money he is willing to pay for that feature‘Anchoring’, when faced with a situation where an unknown value is to be estimated, people take recourse to initial anchors as benchmark. Assigning an abstract, absolute value is much more difficult and inaccurate than estimating value relative to a benchmark‘Status quo bias’ refers to the preference for individuals to remain at the ‘status quo’, because the disadvantages of leaving it loom larger than the advantages. Bias in judgment arising from pre-established positions should be removed To quantify ‘quality’ benefit, two samples were shown, one manually welded part and another robotically welded. As respondents were not being faced with a decision of investment, the negative impact of status quo bias was eliminated. On asking how much lower price would justify their choice in favour of a machine that produces a part of this quality (the manual welded part) than (robotically welded part) quality? Answers varied from 30 per cent to 50 per cent. Some even answered that if they have an alternative of a machine producing good quality, they will not buy a machine producing substandard quality, no matter how much cheaper. These values represent the ‘discount’ for qualitative benefit.A question was asked in regard to quantify ‘predictability’ in quality that how much discount would they need to justify a machine that produces 97 per cent accurate parts, with 3 per cent parts requiring rework or rejection as opposed to that producing 100 per cent accurate parts? The answers varied from 20 per cent to 50 per cent, contrasted with the premium of justification questions, where answers typically focused on ‘cost of rework / rejection’. The question in context to quantify safety was how much discount would they need to justify a machine that is somewhat unsafe, with a possibility of one accident to worker each year? The response was ‘infinite’. Many of them said that they would not accept an unsafe machine, yet with sufficient stimulation and lowering the perceived risk of the accident to a ‘minor’ accident, estimates lay between 30 to 50 per cent. For many manual processes, one or two minor accidents per annum is commonplace. No matter what the ‘qualitative benefit’, it is always possible to pose a question to allow estimating a ‘discount’ for not getting the benefit. The same technique can be adopted for strategic decisions, which are typically done at corporate management levels. The following questions were presented in the form of a premium for a ‘strategic value’. To quantify competitive advantage the question was how much higher overall capital investment will justify gaining an advantage that they can respond to a change in the market requirement three months before than their competitor? Corporate decision makers attach a high value (10-30 per cent) for first mover advantage. (3-6 months represent the typical difference in retooling, retraining and ramping up production when there is a significant product change between manual setups and flexible automation with robotics.) In today’s competitive world, this advantage can cause a severe impact on the organisation, justifying a double digit percentage of perceived valueSimilarly, to quantify operator dependence the question asked was how much higher overall capital investment will justify having no uncertainty of human work force availability, skills and industrial relations issues The proposed step-by-step approach is: Apply first principle: Source: A&D India Dated Oct-Nov 2008
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