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The following ethical scenario was obtained from http://www.cwru.edu/wwwethics.
You are an engineer charged with performing safety testing and obtaining appropriate regulatory agency or outside testing laboratory approvals of your company’s product. The Gee Whiz Mark2 (GWM2) has been tested and found compliant with both voluntary and mandatory safety standards in North America and Europe. Because of a purchase-order error and subsequent oversights in manufacture. 25,000 units of GWM2 were built that are not compliant with any of the North American or European safety standards. A user would be more vulnerable to electric shock from one of these units than from a compliant unit. Under some plausible combinations of events, the user of the bad unit could be electrocuted. Retrofitting these products to make them compliant is not feasible because the rework costs would exceed the profit margin by far. The company agrees that because of this defect the agency safety labels will not be attached to the bad units, as per the requirements of the several agencies. Only two options exist: (a) Scrap the units and take the loss, or (b) sell the units. An employee of the company notes that many countries have no safety standards of any kind for this type of product. It is suggested that the bad units be marketed in these countries. It is pointed out that many of these nations have no electrical wiring code; or if codes exist, they are not enforced. The argument is thus advanced that the bad GWM2 units are no worse than the modus operandi of the electrical practice of these countries and their cultural values. Assume that no treaties or export regulations would be violated.
- a. What would be your recommendation?
- b. Suppose one of the countries under consideration was the country of origin for you or your recent ancestors. Would this affect your recommendations?
- c. Now suppose you are not asked for a recommendation, only an opinion. What is your response?
- d. Suppose it is suggested that the bad units be sold to a third party, who would very likely sell the units to these countries. Your comments?
- e. You are offered gratis one of the bad units for your use at home, provided that you sign a release indicating your awareness of the condition of the unit and that it is given to you as a test unit. Assume you cannot retrofit it and that the product could be very useful to you. Would you accept the offer?
- f. Suppose it is suggested that the offer stated in part (e) be made to all employees of the company. Your comments?
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Chapter 3 Solutions
ENGINEERING DESIGN PROCESS
- Pb 6) 4.31 do = 25 mm 4.31 What bending moment is required to produce a maximum normal stress of 400 MPa: (a) In a straight round rod of 40-mm diameter? (b) In a straight square rod, 40 mm on a side (with bending about the X axis as shown for a rectangular section in Appendix B-2)?arrow_forwardPb 13) 4.73 Find the maximum value of stress at the hole and semicircular notch. 45000 N 50 mm 100 mm 15 mm 25 mm 45000 Narrow_forwardPb 11) 4.53 Consider the 1-in solid round shaft supported by self-aligning bearings at A and B. Attached to the shaft are two chain sprockets that are loaded as shown. Treat this as a static loading problem and identify the specific shat location subjected to the most severe state of stress and make a Mohr circle representation of this stress state. 1-in.-dia. shaft 500 lb 2 in. 1000 lb 3 in. 3 in.arrow_forward
- Pb 5) 4.19 Estimate the torque required to produce a maximum shear stress of 570 MPa in a hollow shaft having an inner diameter of 20 mm and an outer diameter of 25 mm. d; = 20 mm T d = 25 mm Tmax = 570 MPaarrow_forwardQuiz/An eccentrically loaded bracket is welded to the support as shown in Figure below. The load is static. The weld size for weld w1 is h1 = 6mm, for w2 h2 = 5mm, and for w3 is h3 =5.5 mm. Determine the safety factor (S.f) for the welds. F=22 kN. Use an AWS Electrode type (E90xx). I want university professor solutions O REDMI NOTE 8 PRO CAI QUAD CAMERA 140 S 101.15 Farrow_forwardResearch and select different values for the R ratio from various engine models, then analyze how these changes affect instantaneous velocity and acceleration, presenting your findings visually using graphsarrow_forward
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- AUTO CONTROLDNO COPIED ANSWERS, SHOW FULL SOLUTION The differential equation of a DC motor can be described by the following equation Find the transfer function between the applied voltage ( Va)and the motor speed (thetadot m). What is the steady state speed of the motor after a voltage (Va = 10V) has been applied. Find the transfer function between the applied voltage (Va) and the shaft angle (thetadot m) .arrow_forwardAuto Controls DONT COPY ANSWERS Perform the partial fraction expansion of the following transfer function and find the impulse response: G(s) = (s/2 + 5/3) / (s^2 + 4s + 6) G(s) =( 6s^2 + 50) / (s+3)(s^2 +4)arrow_forwardDerive the Laplace transform of the following functions. Use the definition of Laplace transform. f(t)=sin4t and f(t)=cos2t Auto Controlsarrow_forward
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