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.

View More On Wikipedia.org
Recent contents Top users
  1. J

    Engineering Basic opamp design problem ##V_{output} = 3V_1 - 2V_2##

    Here I let ##R_2 = 2 ## kohms and ##R_1 = 1## kohms. Using this suggests that ##R_3 = 0## and ## R_4 = 1 ## kohms (?!) The resulting circuit is Is this the correct way to solve this? PS : I just realized that I have interchanged ##V_1## and ## V_2## in the diagram!
  2. Y

    What programs to learn for IT and web design?

    Just kind of want to find a hobby, from the trouble I got in being logged out of my computer and thanks the Sysprog for helping to resolve the problem. I am thinking about maybe I should learn more about computers. Mainly I just want to be not so helpless with computers, learning others are...
  3. T

    I to design this turbine blade

    Given above is a rough model of what I want to make. This is in fact a turbine that will be placed in airlfow of 65-70 m/s velocity. I want to make it by using a 3D printer. But I want to use the best design of the blades that will give me highest output out of this airflow. Can anybody tell me...
  4. G

    I How Should Light Be Illuminated in Spectrometer Designs for Liquid Analysis?

    Hi, I’ve built a classical design spectroscope for astronomy but with so many cloudy days here,I like to adapt it to looking at absorption spectra of liquids. i have an adjustable slit, and I’m going to buy a cuvette to hold the liquids. But my question is, in a normal spectrometer, is...
  5. mastermechanic

    Undefined log-mean temperature in heat exchanger design

    For a course project, I need to design a heat exchanger to cool electronic components in an UAV. The heat exchanger will be cross-flow air to liquid. The cold side (air side) properties are evaluated at an altitude of 7620 m and -34.5 °C. For the hot side ethylene glycol - water solution with a...
  6. MUZE

    Could a blimp shrink into a plane?

    I can imagine a frame within a blimp/hybrid airship so when the hydrogen inside the blimp is recaptured the skin retracts to form a wing. As the blimp travels faster it shrinks, the buoyancy giving way to the lift from its wing shape to a point in which it is no longer a blimp, but a plane. What...
  7. T

    Design of Hydropowered Turbine Propeller for Mobile Charger

    I am currently working on a project for an undergraduate course in university. My team and I have decided to make a hydropowered mobile device charger, and I am responsible for the design and modeling of the turbine propeller. This turbine will need to be able to function in low velocity streams...
  8. T

    Op-amp Oscillator Circuit Design (10-50 MHz)

    Questions: 1. Is LM741 capable of oscillating at 10MHz? If not, could you suggest me an affordable op-amp for this operation? 2. How likely am I, as a beginner to be able to design a zero phase shift feedback filter to use with a non-inverting op-amp circuit to create an oscillator? 3. If an...
  9. Nero

    Project to design and calculate the hydraulics for a deck crane

    Hi, Iam having a really hard time with this university project. The project is to design and calculate the hydraulics for a deck crane. The crane boom must be lifted with one or more cylinders and you want a boom angle from 0 to 80 degrees. Lifting capacity must be 10 ton on 20 m arm at a boom...
  10. W

    Hybrid Rocket Injector Plate Design Research

    Hello, First of all, I hope this post is in the right section (aerospace engineering). I am doing research on the injector plate design for a hybrid rocket and I'm no where at the moment. I was thinking that I could improve the geometry of the injector plate in order to help improve some...
  11. NTL2009

    Automotive Design Factors for ICE Peak HP versus RPM?

    I'm thinking about the large (for the 1960's) farm tractors I drove, that produced lots of low end torque, and max RPM was ~ 1800 ~2200 (from memory). Are there certain design factors to maximize horsepower at these low RPMs, versus a common auto engine that might peak around 5,000-6,000 RPM...
  12. Whitestar

    Realism of Seaquest DSV Submarine Design: Fact or Fiction?

    I've often wondered how realistic the Seaquest DSV submarine design was. Here are some attachments I've included: https://www.pinterest.fr/pin/326651779206382460/ I would imagine that having windows on the sub would represent structural weakness and it's overall flatness design would make...
  13. garthenar

    Fixing Error: (vlog-7) Failed to Open Design Unit File

    Homework Statement:: None. This is part of implementing a project and not an actual question. It's a technical problem or equipment failure. Relevant Equations:: The Code I get is; Error: (vlog-7) Failed to open design unit file "Waveform.vwf.vt" in read mode. [Mentor Note -- moved to the...
  14. Aurimas

    How to design a slide switch mechanism to be waterproof -- ideas?

    I need to protect electronic parts in case from water. The thing is, I need to design slide switch on the cap of the housing. Maybe any ideas?
  15. T

    How can I learn to use Cadence for PCB design?

    Hello, I am a beginner but I have a few board design experiences. Now, I want to learn Cadence, but I am confused. Can someone explain the difference between the following software? -Allegro Design Entry L vs. Allegro Design Entry CIS -OrCAD vs. Cadence -Signal Integrity/Sigrity vs. Package...
  16. D

    Can a Coiled Antenna Receive Radio Signals at 30 MHz?

    if an antenna 8.2 feet long was coiled up into a coil could it still receive radio signals at 30 megahertz?
  17. Vigardo

    Design loads for wind towers & jackets?

    Dear experts, I'm looking for some approximate (but reliable) design loads and geometry for wind turbine towers to perform a comparative FEA study. I don't need very exact data. I just want some load levels for different wind towers, e.g. for 5 or 10 MW on- and off-shore wind turbines, and...
  18. V

    Inlet and outlet design for a cylindrical tank

    I am designing an inlet tube and a screened outlet for a cylindrical tank with a top opening hole (which determines the water level). I hope I could receive some suggestions and advice on the approach or some texts/equations I should check out. I am still in the process of learning fluid...
  19. E

    Bias-Tee Design for an RF Circuit

    Am having a difficult time with Bias-Tees. I do not know how to get the characteristic impedance (although I assume it uses the equation below) How would you use this if you are not given the R and the G? You could guess L and C. I know how Bias-Tees work and that a typical schematic would...
  20. Lietenacious

    Best truss bridge design for this school project?

    Summary:: In my course, we have to design a truss bridge (made out of balsa wood sticks) that can withstand the most weight compared to its mass. It’s our final, so very important haha. One of the rules is we can’t stack the wood right on top of each other to support it (just preventing us from...
  21. M

    Engineering Design a go kart braking system

    i have been stuck on this question from my assignment, i have tried solving it in many ways, but apparently i am either bad at this or i just don't understand the question haha. * As a prudent engineer, the main shaft is now subjected to loading condition when only brake is applied. Show with...
  22. P

    HVAC Exhaust flow for the chimney design on a custom boiler

    Hi all 😁 Hopefully it's ok to ask this question here. Ok so my project is a little bit redneck as opposed to being engineered science. I have been experimenting with burning waste oil in my oil furnace in my garage. It is an average house oil furnace with Beckett burner. ( burner has electric...
  23. Z

    Circuit design question -- 100% transistor functionality needed?

    A question for folks designing circuits, is it the case that 100% of transistors must be functional for the circuit to operate, or are a few transistors allowed to fail in the design, but compensation circuits or redundancy is put in place to prevent circut funtionality to degrade? I'm wondering...
  24. E

    Design Process flowsheet using ASPEN PLUS

    I have defined all the list of components necessary for this process and the chosen property method was (ENRTL-SR). I chose Gibbs reactor to simulate the low-temperature reactor, high-temperature reactor, and chemical absorber because the kinetics of the reactions is not known. Also, the Rstoic...
  25. J

    Optimizing Thrust and Operation Time for a CO2-Powered Rocket Torpedo Design

    1. A CO2 canister with the following dimensions will be used. 2. A shell was designed to house the CO2 canister, and the coefficient of drag was calculated to be 0.33 3. The constant thrust required to move the torpedo at approximately 1ft/s was found by using a free body diagram to generate...
  26. theycallmevirgo

    Suggested starting points for 3d scanner design

    My school recently got an industrial robot arm with a precision turntable. I was thinking how to use this with some cameras/lasers to make a 3d scanner. Where would you folks recommend I start looking?
  27. F

    Need an ME for a rack and pinion design, what is needed from both of us

    I need a ME to design a rack and pinion system where both gears are plastic (type chosen through discussion) and rather small (5mm diameter for the pinion and 6mm length for the rack). The rack is moved by a spring loaded button press and the goal is to rotate an axle the pinion is attached to...
  28. K

    Design of a CW multiplier circuit

    Im trying to design a circuit that switch from 220V AC to 2kV DC using 1 voltage source (without use of transformers). So CW (Cockcroft-Walton) seemed like a good design to do that. Looking at the equations of halfwave CW it looked to me that the optimal number of stages is set if you know the...
  29. nagyn

    Induction stovetop design: am I using these equations correctly?

    I've been told an effective induction stovetop needs to deliver about 1000W of power. I have magnet wire that can tolerate at most about 0.2A of current, and was planning on using a 60Hz wall outlet as my source (obviously I'll need to bring down the outlet current quite a bit). So the energy...
  30. D

    Parallel Plate Capacitor Design

    Hello, A question came up in my head that I couldn't think of a way to math out. Say I want to design a parallel plate capacitor. The equation for capacitance is quite simple: Everything in this equation makes sense, besides for the distance. This is saying that an infinitely small length...
  31. awer

    Best speed reducer for a simple project (gearbox design choice)

    Hi, As the summary says, I'm trying to design a simple gearbox with an approximate ratio of 20:1. I have two preliminary designs, one using a worm gear and another using a train of 5 spur gears. Both designs give me the desired ratio, but I really don't know which one I should choose. The...
  32. S

    How to decide which component is best in terms of stress and deformation?

    Summary: In terms of stress, strain & deformation, what is better for a given component. 1) low stress or high stress 2) less strain or large strain 3) less deformation or large deformation? Some dimensional changes were made in an existing component to study how these changes effect the...
  33. wirefree

    Engineering MOSFET Design: Solving Q4 with R1, R2, k, V_T and I_D

    I greatly appreciate the opportunity afforded by this forum to submit questions. I am presently tackling a 10-part question, fourth of which this post is concerning. Values provided at the start are: R1, R2, k, V_T and I_D. In the previous 3 parts, Source Resistor, Transconductance (g_m) and...
  34. gazaah

    Vacuum suspended fishtank: Why would this design work or not?

  35. R

    Linkage design for Excavator and Dump truck

    Hi, I need to know the name of some very good books for learning linkage design. I have to design some complex system using Linkage. I have to design excavator, truck and crane and hydraulics machines and civil Engineering Machnies, Agriculture machines, robot arm. I have a little knowledge in...
  36. T

    Subsea Pressure Housing Design – Wall Thickness for Stress & Buckling

    I’m designing a subsea sensor that will go to a max depth of 600 m (6 MPa/60 bar). In a simple model, it will be made of a pressure housing cylinder and two end caps, all grade 5 titanium. Some geometry is attached. I’m looking for advice on how to calculate the thickness of the...
  37. ramadhankd

    Shredder Cutting Area Calculation

    Hello everyone, I'm trying to design a plastic shredder machine, but I'm stuck on how to determine the cutting area of my shredder. I've already made some research, and I think that the cutting area depends on the blade thickness and the plastic thickness. As for why the blade thickness is...
  38. Ramazan Duzgun

    What is the design methodology of a Heatsink for a high-power diode?

    In reference of Ned Mohan's book, I have designed a heatsink, firstly natural convection taken into account, but laboratory test results and theoretical calculations are not matching. The test results: For 40 A (means 62 W), 30 Celsius ambient temp, it raised up 51 Celsius. So, Rs-a =...
  39. Quix270

    What resources to learn to design a small 500W synchronous generator?

    I want to learn to design a synchronous generator, I search and search but I don’t find nothing to that.
  40. P

    Design problem with a constant torque motor

    I’ve been trying to design a counterbalance system using a constant torque motor spring assembly. The spring I’m looking at has 25.4kg cm torque on the shaft from the output drum. So if I put a 100mm diameter cable drum on this shaft I should be able to counterbalance 5kg over the given...
  41. A

    Compound lever arm - compressor design

    So what comes to mind is utilising the full height and further node points in a triangulated system... however being only just now introduced to the concept of a compound lever I am unsure of how to get this system to work. Any thoughts much appreciated.
  42. S

    Use of an Impact Test in the cross section design of a component

    If I have impact test data showing energy absorbed by notched specimen, how do I utilize this data while designing. In my case, i am trying to design the valve which closes by striking on valve seat, how do i use the impact test results for this design?
  43. Hassan Elkady

    Calculate Braking Torque in Wind Turbine Design

    How can I calculate the braking torque in wind turbine?
  44. S

    Automotive Design of a Valve stem cross section in a Steam turbine emergency valve

    I want to design cross section area required for valve stem when valve is closed under spring force. Valve stem should be designed for buckling load but I am unable to calculate buckling load coming due to impact force coming when valve bangs on valve seat. Valve is having concentric spring. Is...
  45. brainbaby

    Role of the capacitor, coil and choke in this television receiver design

    Hi friends, I am studying this circuit which is the first all electronic television receiver created by Dr. Farnsworth back in 1927. Triode are being employed along with some caps and coils. The design is very simple and clear, basically this receiver is a detector circuit which detects the...
  46. A

    Current in coupled loops (transformer design)

    I think I know the answer,but just to make sure. I have two coupled inductors through a core that provides better flux permeability, aka a transformer, I provide say 5v and 1000 amps AC to the primary loop, in my secondary loop I have a capacitor in series with the loop (of sufficient...
  47. Christoffer B

    Imperfections in magnet pole pieces

    Hi all, I'm fairly new here. I'm currently designing an as-homogene-as-possible permanent magnet for low-field NMR and similar experiments. I'm on a fairly tight budget, and having finally found pole pieces for my magnets, I got them even though they have a small saw cut in the edge. approx. 5...
  48. L

    Medical assembly design help

    Hello , I have an medical device assembly, where I trigger the needle for injection, mechanically, with a pretensioned spring. Injection takes 3 minutes, then I have to retract the needle. How can I trigger the needle, using an electrical impulse ?
  49. chucrut

    Electron Gun Design - Can Positive Voltage Work?

    Hello, I have a question about electron guns. I have read a lot, and all designs use high NEGATIVE voltage (-1000v for example). Is possible to use high POSITIVE voltage like this drawing?. Or do you think it will not work this way? Considering that all the chamber walls are at ground voltage...
  50. runningman19

    Design of an Op Amp Circuit for Voltage Amplification

    Hi Everyone, I would like to measure voltage output from a sensor via an Arduino. The sensor outputs 20 mV at max capacity. I'd like to bump this up to around 5 volts so it is easier to measure. My plan was to use a non-inverting topology coupled with an LM393N op-amp. The schematic for a...
Back
Top