Engineering Studies – H1 Civil Engineering – Practical Activities
This section contains classroom practical challenges that enhance the learning of engineering concepts. The challenges link to Engineering Studies outcome.
- Engineered structures
- Stress and Strain
- Material testing procedures
- Materials -composites, glass, ceramic
Suggested short practical activities include:
Ice-block Stick testing
Using a simple loading system, test the load carrying ability of a stick laid flat/laid on its edge.
Use data to determine BMD
Testing of material properties
Practical application of appropriate physical and chemical tests on materials
Determine properties and applications of different engineering materials.
With use of a Hounsfield Tensometer carry out load/extension tests (tensile, compression, hardness, shear tests)
Understand the conversion of raw Tensometer data from Loads and Elongation to Stress and Strain. The latter enabling global comparisons.
The structure of composite materials
Materials, Syllabus: p.25, p26
The macro/micro assessment of the structure of composite engineering materials
Equipment: Optical microscope, or hand lens with about 10 X power
Specimens: Small examples of a number of different composite materials from the following categories;
Timber – hardwood, softwood, plywood, compressed fibreboard.
Laminates – glass
Process: To examine the surface of each specimen with the naked eye, and appropriate magnifying equipment, to determine the physical structure of each sample. Surfaces showing differing features in colour or texture should be photographed or sketched. Components of the specimen should be identified and structure identified, where it can be determined and their physical hardness should be quantified when compared with other features of the material.
Some components of materials can be elements, compounds, or amorphous in structure. Crystals in a structure should be identified and noted.
Data recorded from this process should be examined and research taken on to identify the particular composites and their use.
– strain practical – data collection – report writing.
– instructions for classroom test : Stretching Wires
The Straw Bridge