DETROIT: Ford uses artificial bird poop to test the durability of paintwork.
The laboratory-developed synthetic droppings are so realistic that they can accurately reflect the differing diets – and subsequent different acidity of droppings – of most of the birdlife in Europe.
Applied to test panels as a spray, sample pieces are aged at 40° C, 50° C and 60° C in an oven to replicate customer use in extreme heats, pushing the paint corrosion protection to its limits.
The “bird poop test” is just one of the ordeals paint samples are put through. They also spray phosphoric acid mixed with soap detergent, and synthetic pollen on panels before aging them in ovens at 60° C and 80° C for 30 minutes.
The test guards against airborne particulates such as pollen and sticky tree sap.
By fine-tuning the pigments, resins and additives that go into making a car’s shiny protective paintwork, specialists can ensure the coating Ford applies to its vehicles has the optimum make-up to resist the impact of these types of pollutants, no matter what the weather.
Other tests for paint samples include being bombarded non-stop with ultraviolet light for up to 6,000 hours (250 days) in a light lab – simulating five years in the brightest place on earth – to evaluate outdoor weathering; getting frozen in sub-zero temperatures; being exposed to harsh winter road grime in a high humidity salt chamber and subjection to simulated fuel staining from vehicle service station over-fuelling.
"With so many cars parked up at the moment as people stay at home, it’s likely birds are leaving their mark more than usual. It’s wise to remove it before it gets too baked on, but our customers can at least take some consolation in the work we do to keep their paint protected,” said André Thierig, manager, core engineering paint, Ford of Europe.
