Saturday, March 28, 2015   

(Golf) Sparks from titanium clubs ignite fires
(03-20 10:27)

Golfers are being urged to swing with care after scientists at the University of California proved that titanium-coated clubs can cause course-side vegetation to burst into flames.
Fire Authority Capt Steve Concialdi said Wednesday the results confirm a suspicion that investigators have had for years: that titanium clubs probably caused at least two blazes on Orange County golf courses, including one that burned 12 acres at Shady Canyon in 2010.
“The common denominator was each golfer used a titanium club, and hit the ball just out of bounds next to dry vegetation where the ground was extremely rocky,'' he said.
Scientists painstakingly re-created in the lab course the conditions on the days of the fires. Using high-speed cameras and electron microscopes, they found that if hit upon a rock, clubs containing titanium can produce sparks of up to 3,000 degrees that will burn for more than a second, said James Earthman, a chemical engineering and materials science professor and an author of the study.
“And that gives the spark plenty of time'' to ignite nearby foliage, he said. “Titanium reacts violently with both oxygen and nitrogen in the air.''
In contrast, when standard stainless steel clubs were used, there was no reaction.
Most golf clubs have steel heads but many manufacturers also make ones with a titanium alloy component in the head. Such alloys are 40 percent lighter, which can make the club easier to swing, researchers said. —AP

   
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