20 credits at level HE6
THE AIMS OF THIS MODULE:
• To introduce and develop students to general terms and principles relating to road vehicle investigation and reconstruction techniques.
• To provide an opportunity to investigate the theoretically modelled accidents with the real-world road vehicle accidents.
• To develop the ability to work individually while maintaining close group contact.
• To develop skills associated with accurate collection of data at the scene of accident, accurate analysis and correct interpretation of the results.
• Fundamentals of Vehicle collisions
- Equations of motion. Definitions; Derivation, acceleration-time, velocity-time and distance-time curves.
- Laws of motion. Newton’s Law; Applications of Equations of Motion
- Friction and its modification. Static and Kinetic Friction; Drag and Skid Test Procedure. Modification of
Friction in unbraked Trailer, incomplete wheel locking, effect of gradient and unbraked trailer on gradient.
- Critical speed. Motion in a circle. Flat curve. Banked curve and Cornering on a banked curve.
- Momentum. Momentum and conservation of momentum.
• Road Accident Topology
- Road accident and accident investigation. Influencing factors. Witnesses. Specialist Assistance.
Collection and presentation of collected data or evidence.
- Accident scene. Scene preservation and physical evidence at scene; vehicles examination.
- Road conditions. Changes in road surface and how it affects skidding. Skid marks and braking systems –
effects of different gracing systems.
- Accident scene measurement and plan drawing. Scene measurement including inclines, sight board, plan
drawing and electronic scene measurement.
- Data handling. Straight line graphs, deriving equations from data.
• The Theory of Road Accident
- Motion during impact. Central impact, coefficient of restitution general solution, special cases; Oblique
impact, general solution, effects of e and λ, special cases (oblique into the wall, oblique in another car,
offset in another car.
- Energy Conversion and Transfer. Rigid barrier impact; Central impact of two vehicles, Energy loss and
Kelvin’s theorem. Energy transfer. Frames of reference of central impact; Oblique impact, General solution.
- The Crushing process of vehicle body. Acceleration versus time model. Vehicle impact constants. Impact
Number. Particular values. Force versus crush characteristics; Theoretical rigid Barrier Test. Evaluating
impact constants. Determining impact performance.
- The Dynamics of two-body collisions. Central impact of two vehicles. Solution for know crush. Solution for
known speed. Energy loss ratio; Limiting cases. Vehicle collisions. Elastic impacts. Equivalent barriers.
Oblique Impact; Aggressivity.
• Reconstruction and Computer Modelling
- Reconstruction. Analysing real world accidents and reconstruct.
- Modelling. Use of computer packages to solve the reconstruction problems. Use CRASH 3, PC-CRASH, AITS
LEARNING AND TEACHING STRATEGY, METHODS AND TIME ALLOCATIONS
Lectures, tutorials and field laboratory assignments will be used to develop knowledge and acquire facts. Typical accident investigation will be carried out in conjunction with the Grater Manchester Police Accident Investigation Headquarters. Case studies will be used to allow the learner to develop skills in analysing different situation. Learners will be allocated cats studies as assessment to evaluate against set criteria.
The delivery will be structured as follows:
Formal Lectures 20 HOURS
Tutorials 10 HOURS
Seminars/Visits 8 HOURS
Assignments and Viva AssessmentS 60 HOURS
Self Directed Learning 92 HOURS
TOTAL 200 HOURS
when you have successfully completed this module you will:
to demonstrate that you have achieved the learning outcome you will:
|1.||Correctly assess an accident scene using physical measurements.
Demonstrate the knowledge of protecting the scene of the accident in order to accurately examine it for physical evidence.
|2.||Prepare an accurate record of the features that contribute to accidents.
Employ mathematical models, formulas and calculations from the laws of physics and mechanics.
|3.||Mathematically model the scene of the accident and thereby determine the pre- and post-impact characteristics.
Select the appropriate technique and tools in achieving a particular solution.
|4.||Cary out proper investigation and accurately assess the physical evidence in order to avoid wrong conclusions or conclusions based on witness evidence only.
Generate a knowledge base understanding of equipment employed and their output results.
|5.||Compile reports that informative and explicit in terms the collective evidence, including all the analyses carried out.
Use existing computer codes to model accident scenarios and carry out a comparative assessment of different modelling methods.
|6.||Offer better service to the public, hence contribute to future design of safer road vehicles that protect the occupants.
Reduce litigations outbreaks by well executed investigations.
|7.||Solve intermediate and complex practical investigative and reconstructive problems.
||Select appropriate techniques and justify the achieved solution.|
|8.||Develop skills that are specific to the work carried out at the scene of an accident.
Generate models that are realistic to the accident scenario and include development of test plans if necessary.
Your achievement of the learning outcomes for this module will be tested as follows:
|Description||Report produced in L3 School format||Final year close book examination|
Before taking this module you must have successfully completed the following:
No restrictions apply.
1. R. H. Macmillan, Dynamics of vehicle collisions, 1983
2. Gustav Kasanicky, Pavol Kohut, Martin Lukasik, Impact dynamics theory for the analysis and simulation of collisions, 2004
|Host Subject Group:|
|User Name||Date Accessed||Action|