Quickly Master Complex Engineering Concepts
Whether you’re just starting out on your engineering journey or are an experienced professional, our aim is to provide you with all the resources you need to master tricky engineering concepts.
Step 1 – Learn
Learn the fundamentals of mechanical and civil engineering with the help of our articles and videos
Step 2 – Test
Check your understanding of different engineering topics using our detailed quizzes
Step 3 – Improve
Use resources like our summary sheets to continually develop and improve your knowledge
Not sure where to start? Here are a few featured topics that cover a range of interesting engineering concepts.
Trusses
Trusses are structures (e.g bridges or roofs) made up of members that can only carry tensile or compressive axial loads.
Buckling
Buckling is a sudden deflection that occurs in slender columns or members that are loaded in compression.
The Finite Element Method
The finite element method is a numerical method used to approximate the solution to complex problems governed by differential equations.
Thermal Radiation
Radiation is the heat transfer mode where an object emits energy in the form of electromagnetic radiation due to its temperature.
The Efficient Engineer summary sheets are designed to present all of the key information you need to know about a particular engineering topic on a single page. It doesn’t get more efficient than that!
You can use them as study aids, or just as handy references guides for whenever you need to brush up on a troublesome topic.
Watch the latest video from the Efficient Engineer YouTube channel.
The Incredible Properties of Composite Materials
The latest Efficient Engineer video covers composite materials.
This video explores the different types of composites, and how their use to create materials with incredible properties has completely transformed how some of the most advanced enginering problems can be solved.
Test your understanding of engineering concepts with the question of the day.
A circular steel bar with a length of 200 mm and a radius of 2 cm is strained in a tensile test to point B on the stress-strain curve shown below, and is then unloaded. What is the permanent change in the length of the bar compared to its original length?
No change in length
The bar has increased in length by 2 mm
The bar has increased in length by 5 mm
The bar has decreased in length by 5 mm
When a material is loaded beyond the elastic limit, there will be some permanent plastic deformation after the load has been removed. After the load is removed there will be the recovery of the elastic strain, so the material will unload along a curve which has a slope equal to Young's modulus, as shown in the image below. The permanent plastic strain after unloading is 1.0% in this case, which means that the 200 mm long bar has permanently increased in length by 2 mm.
