What is Design: Definition and 1000 Discussions

A design is a plan or specification for the construction of an object or system or for the implementation of an activity or process, or the result of that plan or specification in the form of a prototype, product or process. The verb to design expresses the process of developing a design. In some cases, the direct construction of an object without an explicit prior plan (such as in craftwork, some engineering, coding, and graphic design) may also be considered to be a design activity. The design usually has to satisfy certain goals and constraints, may take into account aesthetic, functional, economic, or socio-political considerations, and is expected to interact with a certain environment. Major examples of designs include architectural blueprints, engineering drawings, business processes, circuit diagrams, and sewing patterns.The person who produces a design is called a designer, which is a term generally used for people who work professionally in one of the various design areas—usually specifying which area is being dealt with (such as a fashion designer, product designer, web designer or interior designer), but also others such as architects and engineers. A designer's sequence of activities is called a design process, possibly using design methods. The process of creating a design can be brief (a quick sketch) or lengthy and complicated, involving considerable research, negotiation, reflection, modeling, interactive adjustment and re-design.

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  1. AJSayad

    Mechanical/Aerospace Engineering Undergrad Senior Design Project

    Hi everyone, This semester I'm enrolled in a senior design course where the students must fully design and fabricate a project from scratch that solves a problem. I've been struggling to think of ideas, so far I have some ideas on a windmill/turbine and a few electricity generation device ideas...
  2. H

    How can I design a Foucault Pendulum for my university building?

    Hi guys, I think I have persuaded the administration to install a Foucault pendulum in my university building where a high roof and open spaces are available. The thing is I have to project it with design, cost, etc. Those are domains which I don't have much expertise as a simple physicist. So...
  3. Nickf_Zar

    Agitator Torque Calculation

    Hi All, I must calculate the torque and for an agitator motor. An anchor type agitator/scraper, removing crust off the edge of a tank. My instinct is the max or startup torque will be = (Moment of Inertia) x (Angular Acceleration) + (Drag force of the submerged impeller)* Max radius +...
  4. DustyLemon

    Misc. Is a One-Piece Injection-Molded Plastic Lock Possible?

    Hi there, I've been trying to think up a mechanical design with limited success. Before I divert more time to this I thought I'd see if anyone knows if something like this already exists, or is commonly utilized. I'm basically trying to come up with a lock system whereby it is pushed down to...
  5. R

    Design a linear phase low pass filter

    Design a linear phase low pass filter whose specification is:1) Maximum tolerance in the passband equal to 0.01% (linear) in the passband;2) Cutoff frequency at ω_c = 0.3π and transition band at 0.05π;3) Minimum reduction of the 0.95 rejection band.
  6. KyleGranger

    Basic MOSFET Thermal Design: Parameter Calculations from Datasheet

    I would like to be able to determine the current through a device for a given junction temperature. I am looking at a datasheet and notice that it gives the device power dissipation with different case temperatures. Since the maximum junction temperature is 175 C, I believe that means that lower...
  7. fsonnichsen

    Seek Open Source Web Design Software for Serial Controlled Systems

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  8. Vossi

    Verifying a circuit design with voltage regulators

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  9. H

    Building a Two Omni Wheel Robot: Questions & Answers

    Hello! I have a somewhat complicated robot project that I've simplified here to hopefully get a quick answer. I want to build a robot with two omni-wheels that looks like the following (not drawn to scale), where the black is the omni wheels at 45 degree angles and the blue is the robot body...
  10. Janus

    What were the early design concepts for the Apollo program?

    In the TIL thread, I posted a link which had a number of imaged of an early proposal for the Apollo program. I thought I'd use them to do a few renders of what it might have looked like, and point out some of the major differences from the final version. First, what the craft in fully...
  11. diyhome

    Design Wooden Gate & Hinges for Durability & Wind Resistance

    I'm in the process of repairing a wooden gate and would like to replace the wooden posts with metal ones, to help avoid the amount of sag over time. Both the gates are 59 wide by 50 height weighing about 25-50 pounds each(I don't have a scale to weigh it) made from pressure treated wood. I want...
  12. N

    Physics Physics Degrees and Semiconductor Industry (IC Design?)

    Hello there, im a physics student from Germany and currently in my second semester of a Bachelor of science. Lately i have become increasingly interested in woking in the Semiconductor Industry and I am currently reading the book "But how do it Know" by J. Clark Scott and i think it is really...
  13. a61098417

    Gearbox design-Is this design possible to make the output shaft thin?

    Is this design correct?
  14. M

    Engineering Axial Flow Turbine Design Question

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  15. DaveC426913

    Optimizing a universal joint design

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  16. A

    Query about my Computer Science Project -- VPN Design

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  17. F

    MHB Design loads in Aerospace

    Dear Ackbach, Please can you help me with this problem: 1. In an axial direction:\ (f_n \geq 27 [Hz] \) what is the minimum natural frequency? 2. Normal acceleration at launch: \ (g_x = 6.5g \) please can you help Regards Floria
  18. D

    Designing a Power Transformer: Tips and Techniques

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  19. Ameen1985

    Design a compressed air energy storage for a PV plant

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  20. O

    How can I design a gear train to meet specific torque and RPM requirements?

    Hello, I'm after some advice/ clarification on some gear train design. This may just be a simple clarification Requirements I have a lead screw which needs to be supplied power by a Motor. This Lead screw must have 140Nm Torque to raise and lower the load, and must turn at 200RPM. The motors I...
  21. Daddahu

    CanSat Parafoil Design Resources

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  22. Helena Wells

    Should a Big Inductor be Added to a Hartley Oscillator Design?

    This is the Colpitts oscillator: When we design a Colpitts oscillator we must set the value of C1 to be bigger than the parasitic capacitance of the emitter base junction. However in a Hartley oscillator we have an inductive voltage divider and I was wondering if we should put a big inductor...
  23. D

    Soldering station fume hood design

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  24. S

    What is the preheat temperature for the water entering the gas boiler?

    Summary:: I need to know the preheat temperature of the water entering the gas boiler (which i think is the outlet temperature of the cold water Tc,o leaving the heat exchanger) Hi, I'm doing a design project of a hairpin heat exchanger. The problem is: In a public shower, the city water is...
  25. Ntip

    How Do I Design an EMI Filter for a Converter with Only Voltage and Power Specs?

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  26. J

    Please critique my program design

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  27. E

    Elevator Frame Design: Can It Stand Alone?

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  28. K

    Job Skills What next for manual gearbox design engineers?

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  29. Y

    System design for charging battery from turbine alternator

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  30. AxeGrinder

    Help with this Brushless Generator Design Please

  31. M

    Construction Homemade tripod tree stump/root puller design

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  32. FEAnalyst

    Designing a Pallet Chain Conveyor: Calculations and Approaches

    Hi, I'm not sure how to approach the design calculations for chain conveyor. It's rather easy to find formulas for belt conveyor but it's not the same. I also thought about the use of procedure applicable to chain drive but in case of conveyor load is placed directly on the chain (or a pair of...
  33. T

    Calculate the required torque for a cam design

    Hi all, I'm currently designing a cam mechanism. Would like to check how much motor rated torque required for the following design of snail cam ? To ease calculation, i have include some assumed factor as below. Two extreme condition (rotation degree) to compare. What is the motor rated...
  34. FEAnalyst

    Design of welds under dynamic (shock) loads

    Hi, in the books about the design of welded connection, we can find detailed description of calculations for static and fatigue loads. But what about the other type of dynamic behavior - shock ? As an example consider welded parts of the tow hitch used to free vehicles stuck in mud. Of course...
  35. Ntip

    Feedback controller design for boost converter

    I recently started looking into a boost converter design that would be no load most of the time which causes it to operate in DCM. After calculating the duty cycle D, it is dependent on Vi, Vo, L, f, and R. The load R and output voltage Vo are fixed, but I would like to vary the other parameters...
  36. S

    When are Lumped-element models used in the design process?

    Hi everybody, Academic papers in mechanical engineering use often lumped-element (or lumped-parameter) models such as a typical quarter car model. However, books about the (mechanical) engineering design methodologies (such as by authors Dieter, Shigley, or Pahl-Beitz) seem to not mention this...
  37. R

    Pole placement design, Control Theory

    Summary:: Control Theory root equation pole Hi, I ran into a simple question but somehow I can't get it right. My work this far: ## G_0(s) = G(s) \cdot K \cdot \frac{1}{T_I s} = \frac{k}{\tau s +1} \cdot \frac{2\beta \tau -1}{k} \cdot \frac{2\beta^2 \tau}{Kks} = \frac{2\beta^2\tau}{s(\tau s...
  38. H

    Database Table Design for Canadian Electoral Data

    I have been asked by my team lead to create two tables for a database and to outline the rationale behind my table design choices.Table 1 should contain the following columns and be named vote_share: ● Riding Number ● Riding Name in English ● Riding Name in French ● Total votes ● Turnout (votes...
  39. A

    33KV potential transformer design

    I am in a team of designing a 33KV potential transformer. We done secondary turn as 75 and primary turns as 15000 with core cross sectional area of 5000 sq.mm. As per IS standard we need to maintain a accuracy class of 0.2 at 50VA burden but we can't able to achieve it. Someone please help us to...
  40. P

    Engineering Black-box design to create sawtooth waveform

    Hi I received some great help yesterday and i was hoping someone would be able to help me out again today Note: the given equation is very long and would look very messy without being typed in the correct format so I didn't enter the entire thing in the relevant equations box; instead it is...
  41. H

    Stargazing Observations and telescope/microscope design questions

    Greetings, I was sitting around thinking and I began to think about Astronomy from school. We studied telescope design. Optical came to mind. Can a telescope sensor be designed after the human eye. Rods and Cones. It seemed somewhat trivial but at the same time I was thinking our eyes are close...
  42. willDavidson

    PCB design: multiple layers vs heavier copper

    I am designing a board which will have relatively high current. The options are to use heavier copper (4 oz), use two layers (2 oz), or 4 layers (1 oz). Are there any benefits to using one configuration over the others?
  43. B

    2D vs 3D Method of Characteristics for Rocket Nozzle Design

    Hi all, I'm working on programming a simple 2D method of characteristics program to design the nozzle wall contour for a supersonic rocket nozzle. I'm wondering roughly what sort of difference I should expect from a 2D vs 3D method of characteristics program and where I could find a good...
  44. S

    ASME compliance in Pressure Vessel design

    Summary:: Hello i have a question regarding pressure vessel design. As per the required operating parameters for a pressure vessel, i have calculated the sheet thickness for the shell to be 4 mm and base plate thickness to be 25mm. These results are based on ASME calculations and ansys.Both...
  45. J

    Uniform Field Gap (Rogowski profile) Electrode Design

    Hi, I am interested in designing an electrode that reduces the peak e-field intensity at the edges of the electrode. I've read some papers and it looks like there are quite a few. I'm not really familiar with the terms, so I decided to start off with what looks like is one of the simpler ones...
  46. Mason_Jays

    How to design a CPU Cooler attached on an Aluminum Panel?

    Im now drawing sheet metal blueprints, which has a feature like attachable of Commonly use of CPU Cooler. The product that i want to attach is Cooler master Hyper T4. is there any information about standard dimension for regular cpu cooler installation ?
  47. I

    Considerations for design of lead screw + guide rail set up

    Hi everyone! I'm a mechanical engineering undergraduate and am designing a linear motion system for a school project. I hope to be able to use this system to achieve opposing motion for 2 x 200 kg loads (i.e. move them closer/ further apart simultaneously). Referring to the picture below...
  48. Ozen

    Concentric Meniscus Lenses Design

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  49. A

    Pipe Design to pump sea water from the ocean to a boiler via intermediate tanks

    I am in the process of designing a pumping/piping system for fun, have no experience in this field, but I enjoy learning. I have been using ANSI/ASME codes in the project quite a bit. For the system I am using 4" nom. Schedule 40 316 SS pipe. The reason I selected the pipe is because the...
  50. R

    Design of a cell phone stand - force balance question

    Hello all- I am trying to design a simple cell phone holder that will be printed using a 3D printer. For this phone holder I would like the base to be the minimum length possible to avoid the thing tipping over backwards. I drew a simplified slope and base which represents the phone on the...
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