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General Engineering Forum

Join the discussion of general engineering topics. The design, building, and use of engines, machines, and structures. Use the forum for any engineering topics not applicable to the specific categories.

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Where to buy photoresist for photolithography?

Feb 1, 2016 · Replies 3 · Feb 1, 2016

Replies: 3

Views: 3K

Answer Torque Question: Find Allowable Shear Stress

Jan 31, 2016 · Replies 1 · Jan 31, 2016

Replies: 1

Views: 1K

High school project -- Finding mass flow rate, air velocity

Jan 17, 2016 · Replies 18 · Jan 31, 2016

Replies: 18

Views: 3K

Outout difference between different size piezo disc

Jan 30, 2016 · Replies 1 · Jan 31, 2016

Replies: 1

Views: 3K

Whats the relation between the centre of gravity?

Jan 31, 2016 · Replies 1 · Jan 31, 2016

Replies: 1

Views: 2K

Nylon deterioration from hydrogen released water vapor?

Jan 29, 2016 · Replies 9 · Jan 30, 2016

Replies: 9

Views: 3K

Magnet on drone just attract hate

Jan 30, 2016 · Replies 3 · Jan 30, 2016

Replies: 3

Views: 2K

What Is the Rise and Span of a Bridge?

Jan 30, 2016 · Replies 1 · Jan 30, 2016

Replies: 1

Views: 1K

Train Clip: Watch as a Powerful Train Rolls Through a Tight Curve on Gfycat

Jan 27, 2016 · Replies 2 · Jan 30, 2016

Replies: 2

Views: 1K

Number of wire turns to make a Magnet Generator

Jan 28, 2016 · Replies 6 · Jan 28, 2016

Replies: 6

Views: 12K

Designing bridge not perpendicular with ground

Jan 28, 2016 · Replies 1 · Jan 28, 2016

Replies: 1

Views: 2K

Preventing Condensation in Outdoor Enclosure

Jan 28, 2016 · Replies 2 · Jan 28, 2016

Replies: 2

Views: 3K

Air pressure vs post-fuel pump vaporization chamber

Jan 27, 2016 · Replies 10 · Jan 28, 2016

Replies: 10

Views: 2K

Need ideas for high temperature sealed container.

Jan 27, 2016 · Replies 13 · Jan 28, 2016

Replies: 13

Views: 6K

[optics] How to transport light/image in narrow tube

Jan 23, 2016 · Replies 8 · Jan 27, 2016

Replies: 8

Views: 3K

Pulley System for Children's Playground

Jan 17, 2016 · Replies 3 · Jan 26, 2016

Replies: 3

Views: 3K

What does Griffiths formula measure?

Jan 24, 2016 · Replies 1 · Jan 25, 2016

Replies: 1

Views: 2K

Self charging keyboard - Is it possible or just funny?

Jan 18, 2016 · Replies 20 · Jan 25, 2016

Replies: 20

Views: 6K

Why does it keep getting harder to break a pencil in 2?

Jan 12, 2016 · Replies 4 · Jan 24, 2016

Replies: 4

Views: 4K

Thermodynamics: ΔE vs ΔU - Uncover the Difference

Jan 23, 2016 · Replies 1 · Jan 23, 2016

Replies: 1

Views: 12K

What is with the recent surge in quadcopters?

May 30, 2014 · Replies 20 · Jan 22, 2016

Replies: 20

Views: 6K

How do I interpret multiple principal stresses for 3D loading with shear?

Jan 21, 2016 · Replies 3 · Jan 22, 2016

Replies: 3

Views: 2K

Simplification of load on beam for Max M and D

Jan 20, 2016 · Replies 1 · Jan 21, 2016

Replies: 1

Views: 2K

Using Peltier Plates for heating

Jan 3, 2016 · Replies 5 · Jan 21, 2016

Replies: 5

Views: 3K

Why is flow unsymmetric over a delta wing?

Jan 13, 2016 · Replies 18 · Jan 20, 2016

Replies: 18

Views: 3K

Beam Sizing for Engineering Student Project

Jan 20, 2016 · Replies 2 · Jan 20, 2016

Replies: 2

Views: 2K

I need an engineering project for my Science Fair

Jan 19, 2016 · Replies 5 · Jan 19, 2016

Replies: 5

Views: 3K

Need a simple accelerometer for a demo kit

Jan 13, 2016 · Replies 2 · Jan 18, 2016

Replies: 2

Views: 2K

What is the buoyancy force of an oil-filled balloon tethered in water?

Jan 17, 2016 · Replies 9 · Jan 17, 2016

Replies: 9

Views: 4K

How much air pressure is required?

Jan 16, 2016 · Replies 5 · Jan 17, 2016

Replies: 5

Views: 2K

Understanding Truss Analysis: Investigating the Accuracy of a Bridge Design App

Jan 16, 2016 · Replies 3 · Jan 16, 2016

Replies: 3

Views: 3K

Fokker 100 Brake Disc Actuator Main Landing Gear

Jan 15, 2016 · Replies 1 · Jan 16, 2016

Replies: 1

Views: 3K

Determining the acceleration of an aircraft

Nov 21, 2015 · Replies 46 · Jan 15, 2016

2

Replies: 46

Views: 15K

Convert Kg to Gallon: USD Conversion Tips

Jan 6, 2016 · Replies 5 · Jan 14, 2016

Replies: 5

Views: 5K

Materials to make skin friction negligible

Nov 25, 2015 · Replies 3 · Jan 11, 2016

Replies: 3

Views: 2K

Depth at which thermal oscillations become negligible

Dec 21, 2015 · Replies 10 · Jan 11, 2016

Replies: 10

Views: 2K

Can Regular Paint Be Used on Bronze Items?

Jan 11, 2016 · Replies 5 · Jan 11, 2016

Replies: 5

Views: 2K

Low-pressure turbine system heat xchanger?

Jan 9, 2016 · Replies 3 · Jan 10, 2016

Replies: 3

Views: 2K

Most efficient way to rotate a cylinder using a motor?

Dec 30, 2015 · Replies 25 · Jan 10, 2016

Replies: 25

Views: 11K

Heat Transfer Coefficient -Air Flow onto perpendicular plane

Jan 7, 2016 · Replies 12 · Jan 9, 2016

Replies: 12

Views: 4K

Distributing weight of four legs evenly over surface

Jan 8, 2016 · Replies 4 · Jan 8, 2016

Replies: 4

Views: 3K

Why Is the Slope of a Beam Zero at Its Midpoint Despite Maximum Deflection?

Jan 7, 2016 · Replies 1 · Jan 7, 2016

Replies: 1

Views: 3K

How Can I Design an Efficient Water Heating System for a High Flow Pool?

Dec 31, 2015 · Replies 18 · Jan 6, 2016

Replies: 18

Views: 3K

How to control spin of a launched ball

Jan 5, 2016 · Replies 4 · Jan 6, 2016

Replies: 4

Views: 3K

Does SNR Indicate Bandwidth Limitations in Signal Distortion?

Jan 4, 2016 · Replies 2 · Jan 5, 2016

Replies: 2

Views: 2K

Physics experiments for undergraduates

Jan 3, 2016 · Replies 2 · Jan 4, 2016

Replies: 2

Views: 2K

Finite element method for frames/beams

Jan 3, 2016 · Replies 1 · Jan 4, 2016

Replies: 1

Views: 2K

Function of the air conditioner fan outside?

Jan 1, 2016 · Replies 3 · Jan 2, 2016

Replies: 3

Views: 3K

How to calculate amount of vapor given q(t) and p(t)?

Dec 15, 2015 · Replies 4 · Jan 2, 2016

Replies: 4

Views: 2K

Water Pressure Calculation (Limited Information)

Dec 29, 2015 · Replies 6 · Dec 30, 2015

Replies: 6

Views: 2K

Clever idea -- Configurable robot cubes

Dec 27, 2015 · Replies 3 · Dec 30, 2015

Replies: 3

Views: 1K

How can I fill a thin gap in a vacuum chamber without creating a virtual leak?

Dec 28, 2015 · Replies 5 · Dec 29, 2015

Replies: 5

Views: 2K

Need help identifying this piece of lab equipment

Dec 26, 2015 · Replies 4 · Dec 28, 2015

Replies: 4

Views: 2K

Help Improve our Project for Mobility Challenged People

Dec 26, 2015 · Replies 6 · Dec 27, 2015

Replies: 6

Views: 2K

Tablesaw featherboard substitute

Dec 25, 2015 · Replies 4 · Dec 26, 2015

Replies: 4

Views: 3K

Open source for FE / Fluid Analysis?

Dec 18, 2015 · Replies 2 · Dec 24, 2015

Replies: 2

Views: 1K

Impact force of pressure fired vessel (Help needed)

Dec 21, 2015 · Replies 9 · Dec 22, 2015

Replies: 9

Views: 2K

Help me understand the usefulness of control theory please

Aug 27, 2015 · Replies 6 · Dec 21, 2015

Replies: 6

Views: 3K

OpenFOAM Experience? Anyone with Expertise?

Dec 18, 2015 · Replies 2 · Dec 20, 2015

Replies: 2

Views: 2K

Exploring Polyflow Terms: Plane of Symmetry, Zero Velocity Wall & Free Surface

Dec 18, 2015 · Replies 4 · Dec 19, 2015

Replies: 4

Views: 2K

Structural Engineering - Deflection

Dec 15, 2015 · Replies 6 · Dec 19, 2015

Replies: 6

Views: 2K

Finding the maximum load of a bar from the yield strength

Dec 17, 2015 · Replies 2 · Dec 18, 2015

Replies: 2

Views: 7K

Help in laser simulation in COMSOL

Nov 24, 2015 · Replies 8 · Dec 17, 2015

Replies: 8

Views: 7K

How is the vacuum in a light bulb sealed?

Dec 17, 2015 · Replies 1 · Dec 17, 2015

Replies: 1

Views: 8K

Fluid circulation around a closed curve

Dec 15, 2015 · Replies 2 · Dec 16, 2015

Replies: 2

Views: 3K

Need someone with engineering background to assist with statics calculation

Dec 15, 2015 · Replies 6 · Dec 16, 2015

Replies: 6

Views: 2K

Unmediated propulsion, at all possible?

Dec 9, 2015 · Replies 27 · Dec 15, 2015

Replies: 27

Views: 3K

How can I detect whether driver is sitting in car or not?

Dec 14, 2015 · Replies 5 · Dec 15, 2015

Replies: 5

Views: 3K

What is the meaning of 'uni directional control' for electromechanical brakes?

Dec 14, 2015 · Replies 2 · Dec 15, 2015

Replies: 2

Views: 2K

Engineering Interview. Answers from engineers appreciated.

Dec 14, 2015 · Replies 1 · Dec 14, 2015

Replies: 1

Views: 2K

Generating power with a propeller

Nov 8, 2015 · Replies 12 · Dec 13, 2015

Replies: 12

Views: 3K

Measuring torque acting on motor shaft?

Nov 21, 2015 · Replies 3 · Dec 13, 2015

Replies: 3

Views: 3K

Heat Transfer calculation for Tank and piping system

Dec 8, 2015 · Replies 5 · Dec 11, 2015

Replies: 5

Views: 9K

Belt Driven Spindle: Calculating Power & Choosing Speed/Diameter

Dec 10, 2015 · Replies 3 · Dec 11, 2015

Replies: 3

Views: 2K

How to make a wanted shape from a raw material?

Dec 10, 2015 · Replies 11 · Dec 11, 2015

Replies: 11

Views: 2K

Acoustic impedance water surface in partially filled tank

Dec 8, 2015 · Replies 1 · Dec 10, 2015

Replies: 1

Views: 2K

How to calculate solar panel hourly power output?

Mar 11, 2013 · Replies 12 · Dec 10, 2015

Replies: 12

Views: 10K

How to calculate Air flow rate....?

Dec 9, 2015 · Replies 6 · Dec 9, 2015

Replies: 6

Views: 6K

Lifting a Ladder: Calculating Weight & Lift for DIYers

Dec 3, 2015 · Replies 18 · Dec 8, 2015

Replies: 18

Views: 4K

Why did the B52 outlast the B47 in the U.S. fleet?

Dec 8, 2015 · Replies 11 · Dec 8, 2015

Replies: 11

Views: 6K

Bullet camera in PVC pipe condensation problems -- Help please

Dec 6, 2015 · Replies 10 · Dec 8, 2015

Replies: 10

Views: 2K

Maintaining liquid level inside tank with inflow and outflow

Dec 6, 2015 · Replies 3 · Dec 7, 2015

Replies: 3

Views: 3K

How do you calculate total heat capacity for a house/wall?

Dec 5, 2015 · Replies 3 · Dec 6, 2015

Replies: 3

Views: 3K

Why support for diving board case is assume as pin/roll?

Dec 5, 2015 · Replies 10 · Dec 5, 2015

Replies: 10

Views: 2K

Creating a Focused Waveform to Pass Through Clothing and Structures

Dec 2, 2015 · Replies 9 · Dec 4, 2015

Replies: 9

Views: 2K

Calculate Fan Speed - RPM & Blade Dimensions

Nov 21, 2015 · Replies 6 · Dec 3, 2015

Replies: 6

Views: 8K

Relationship between displacement and stress

Dec 2, 2015 · Replies 1 · Dec 2, 2015

Replies: 1

Views: 3K

Efficacy of laying insulation flat on ground around house?

Nov 24, 2015 · Replies 10 · Nov 30, 2015

Replies: 10

Views: 3K

Creating a 10ft x 3ft Racking System: Load Capacity

Nov 12, 2015 · Replies 1 · Nov 30, 2015

Replies: 1

Views: 2K

Beam Deflection equation question

Nov 26, 2015 · Replies 8 · Nov 26, 2015

Replies: 8

Views: 5K

Different FEA results of the same element

Nov 17, 2015 · Replies 4 · Nov 23, 2015

Replies: 4

Views: 2K

What are the problems on human powered aircraft?

Aug 6, 2015 · Replies 23 · Nov 21, 2015

Replies: 23

Views: 5K

Force required to bend sheet metal with a bending brake

Sep 29, 2015 · Replies 6 · Nov 20, 2015

Replies: 6

Views: 4K

Pump water from multiple tanks under vacuum by common pump?

Mar 23, 2015 · Replies 8 · Nov 20, 2015

Replies: 8

Views: 5K

Displacement gradient same as strain?

Nov 17, 2015 · Replies 1 · Nov 20, 2015

Replies: 1

Views: 2K

Brake Power, Engine Speed and bmep Relationship

Nov 18, 2015 · Replies 2 · Nov 19, 2015

Replies: 2

Views: 8K

If GPS works on timing why doesn't having a cable ruin it?

Nov 4, 2015 · Replies 7 · Nov 19, 2015

Replies: 7

Views: 2K

Low-cost deck roof construction

Nov 13, 2015 · Replies 24 · Nov 18, 2015

Replies: 24

Views: 3K

4 point support beam reactions calculator

Nov 17, 2015 · Replies 1 · Nov 18, 2015

Replies: 1

Views: 2K

Forever boiling water in vacuum

Jun 19, 2015 · Replies 15 · Nov 17, 2015

Replies: 15

Views: 13K

General Engineering

Engineering is a diverse and applied field that involves the application of scientific principles and mathematical methods to design, create, and optimize solutions for real-world problems.

Engineers use their analytical and problem-solving skills to innovate and develop technologies across various domains such as civil, mechanical, electrical, and aerospace engineering. The discipline encompasses the design of structures, machines, systems, and processes, with a focus on efficiency, functionality, and safety.

Engineers play a crucial role in shaping the modern world, contributing to advancements in infrastructure, transportation, communication, and numerous other technological domains.

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