Consider the bonding operation described in Problem 3.103, which was analyzed under steady-state conditions. In this case
Question:
Consider the bonding operation described in Problem 3.103, which was analyzed under steady-state conditions. In this case however, the laser will be used to heat the film for a prescribed period of time, creating the transient heating situation shown in the sketch.
The strip is initially at 25°C and the laser provides a uniform flux of 85.000 W/m 2 over a time interval of ∆ton = 10s. The system dimensions and thermo physical properties remain the same, but the convection coefficient to the ambient air at 25°C is now 100 W/m2 ∙ K and w1 = 44 mm. Using an implicit finite-difference method with ∆x = 4 mm and ∆t = 1s, obtain temperature histories for 0
Laser source, 4 Alon Plastic film- 111111 Metal strip T h
Step by Step Answer:
KNOWN Plastic film on metal strip initially at 25C is heated by a laser 85000 Wm for Aton 10 s to cure adhesive convection conditions for ambient air ...View the full answer
Fundamentals of Heat and Mass Transfer
ISBN: 978-0471457282
6th Edition
Authors: Incropera, Dewitt, Bergman, Lavine
Students also viewed these Mechanical Engineering questions
-
Which documents will be used to verify accrued property taxes and the related expense accounts?
-
A certain type of machine will be used to produce three products: A, B, and C. Sales forecasts for these products are: 52,000, 65,000, and 70,000 units per year, respectively. Production rates for...
-
A waste treatment plant operating under steady state conditions a waste liquor containing 500 parts per million (ppm )of a noxious impurity . The impurity is removed with practically no loss of the...
-
The operations of Balloons Ltd. generated the following data for its current December 31 taxation year: Business losses (150,000) Dividends received and deducted (Division C) 25,000 Bond interest...
-
Are directors entitled to be indemnified for any legal costs they incur in defending suits against the corporation?
-
Briefly outline the 10 mental locks that can limit individual creativity. Give an example of a situation in which you subjected yourself to one of these mental locks.
-
A conical plug is used to regulate the airflow from the pipe shown in Fig. P3.118. The air leaves the edge of the cone with a uniform thickness of \(0.02 \mathrm{~m}\). If viscous effects are...
-
1. If you were Skip Grenoble, which alternative would you advice Jim Beierlein to implement? What criteria would you use to arrive at your decision? 2. At what level of demand (in pounds) per year...
-
Does the histogram show that the sales per square foot distribution is symmetric? If the sales per square foot distribution is not symmetric, what is the skew? If there are any outliers, which...
-
A star with surface temperature 20,000K emits energy at a rate of 2.74x10 W. Calculate the peak-intensity wavelength and radius of the star. (a) 1.63x10 m, 1.25x10 m (b) 1.45x10 m, 1.55x10 m (c)...
-
In Section 5.5, the one-term approximation to the series solution for the temperature distribution was developed for a plane wan of thickness 2L that is initially at a uniform temperature and...
-
One end of a stainless steel (AISI 316) rod of diameter 10 mm and length 0.16 m is inserted into a fixture maintained at 200C. The rod, covered with an insulating sleeve, reaches a uniform...
-
Becky Sherrick Company has total proceeds from sales of $4,515. If the proceeds include sales taxes of 5%, the amount to be credited to Sales Revenue is: (a) $4,000. (b) $4,300. (c) $4,289.25. (d) No...
-
Bias in revenue recognition would least likely be suspected if: A. the firm engages in barter transactions. B. reported revenue is higher than the previous quarter. C. revenue is recognized before...
-
In a comprehensive financial analysis, financial statements should be: A. used as reported without adjustment. B. adjusted after completing ratio analysis. C. adjusted for differences in accounting...
-
Erics Used Bookstore prepares its financial statements in accordance with IFRS. Inventory was purchased for 1 million and later marked down to 550,000. One of the books, however, was later discovered...
-
At the time of issue of 4.50% coupon bonds, the effective interest rate was 5.00%. The bonds were most likely issued at: A. par. B. a discount. C. a premium.
-
Which of the following elements represents a residual claim? A. Asset. B. Liability. C. Owners equity.
-
Use the Lorentz transformation equations (Eq. 14. 29-14.32) to prove that the space-time interval \(s^{2}\) between two events is Lorentz-invariant, which means it has the same value for all possible...
-
A horizontal annulus with inside and outside diameters of 8 and 10 cm, respectively, contains liquid water. The inside and outside surfaces are maintained at 40 and 20oC, respectively. Calculate the...
-
You are designing a refrigeration cycle, and have the option of using either a compressor with an efficiency of 70% or a compressor that is more expensive by $5000 but has an efficiency of 80%. The...
-
A 3/8 -in class 5 cap screw and steel washer are used to secure a cap to a cast-iron frame of a machine having a blind threaded hole. The washer is 0.065 in thick. The frame has a modulus of...
-
Bolts distributed about a bolt circle are often called upon to resist an external bending moment as shown in the figure. The external moment is 12 kip? In and the bolt circle has a diameter of 8 in....
-
The figure shows a cast-iron bearing block that is to be bolted to a steel ceiling joist and is to support a gravity load. Bolts used are M20 ISO 8.8 with coarse threads and with 3.4-mmthick steel...
-
A force in the positive direction of an x axis acts on an object moving along that axis. If the magnitude of the force is F = 7.2e*/3.1 N, with x in meters, find the work done by as the object moves...
-
A horizontal board of negligible thickness and area 4.0 m hangs from a spring scale that reads 60 N when a 2.0 m/s wind moves below the board. The air above the board is stationary. When the wind...
-
The only force acting on a 2.2 kg body as it moves along the positive x axis has an x component Fx = -5x N, where x is in meters. The velocity of the body at x = 2.5 m is 9.0 m/s. (a) What is the...
Study smarter with the SolutionInn App