Takashi Akasaka (1925-2010) was a Japanese engineering professor at Chuo University known for his work on cord-rubber composites and tires. [1]
Akasaka completed his undergraduate studies during world war II, graduating from the Applied Mathematics Section of the Engineering Department of the University of Tokyo in 1946. He was first in his class in the Astronautics Department but because research in Aeronautical Engineering was prohibited in Japan after the war, the Astronautics Department was reorganized as the Applied Mathematics Department. Not finding employment, Akasaka continued at the University of Tokyo as an assistant to Tsuyoshi Hayashi, who was working on tires. [2] Akasaka received a doctorate degree in 1962 from the University of Tokyo at the age of 37. His dissertation developed a theory of cord-rubber composites based on an assumption of inextensible cords.
Akasaka joined the faculty of Chuo University in 1952 as a lecturer, teaching mathematics. In 1962 he joined the engineering department, teaching mechanics of materials. Along with Joseph Padovan, he was a founding associate editor and the longest serving associate editor of the journal Tire Science and Technology with 36 years. He delivered the 1989 invited plenary address at the Tire Society conference. He retired from the university in 1995 and remained an honorary faculty member.
His most cited work derived analytical equations describing the contact pressure distribution of a radial tire rolling with a camber angle. [3]
A tire is a ring-shaped component that surrounds a wheel's rim to transfer a vehicle's load from the axle through the wheel to the ground and to provide traction on the surface over which the wheel travels. Most tires, such as those for automobiles and bicycles, are pneumatically inflated structures, providing a flexible cushion that absorbs shock as the tire rolls over rough features on the surface. Tires provide a footprint, called a contact patch, designed to match the vehicle's weight and the bearing on the surface that it rolls over by exerting a pressure that will avoid deforming the surface.
Vehicle dynamics is the study of vehicle motion, e.g., how a vehicle's forward movement changes in response to driver inputs, propulsion system outputs, ambient conditions, air/surface/water conditions, etc. Vehicle dynamics is a part of engineering primarily based on classical mechanics. It may be applied for motorized vehicles, bicycles and motorcycles, aircraft, and watercraft.
A radial tire is a particular design of vehicular tire. In this design, the cord plies are arranged at 90 degrees to the direction of travel, or radially. Radial tire construction climbed to 100% market share in North America following Consumer Reports finding the superiority of the radial design in 1968, and were standard by 1976.
The Tire Society is a non-profit professional body, specifically an engineering society, whose mission is to increase and disseminate knowledge as it pertains to the science and technology of tires. It hosts a two-day meeting and conference every year. In addition, it publishes a peer reviewed technical journal, Tire Science and Technology.
Tire Science and Technology is a quarterly peer-reviewed scientific journal that publishes original research and reviews on experimental, analytical, and computational aspects of tires. Since 1978, the Tire Society has published the journal. The current editor-in-chief is Michael Kaliske.
The following outline is provided as an overview of and topical guide to tires:
The Charles Goodyear Medal is the highest honor conferred by the American Chemical Society, Rubber Division. Established in 1941, the award is named after Charles Goodyear, the discoverer of vulcanization, and consists of a gold medal, a framed certificate and prize money. The medal honors individuals for "outstanding invention, innovation, or development which has resulted in a significant change or contribution to the nature of the rubber industry". Awardees give a lecture at an ACS Rubber Division meeting, and publish a review of their work in the society's scientific journal Rubber Chemistry and Technology.
Adolf Schallamach (1905–1997) was a scientist at the British Rubber Producers' Research Association noted for pioneering understanding of the mechanisms of rubber friction. He was one of only two electrical engineers ever to win the Charles Goodyear Medal.
Dr. Karl Alfred Grosch (1923-2012) was a rubber industry scientist noted for his contributions to understanding tire friction and abrasion. Dr. Grosch is the developer of the LAT 100 Abrasion tester that is used widely in the tire industry to evaluate the friction and wear properties of rubber compounds.
Timothy B. Rhyne is a retired Michelin Research Fellow and co-inventor of the Tweel.
Steven M. Cron is a retired Michelin product research engineer and co-inventor of the Tweel.
Shingo Futamura is a rubber industry materials scientist noted for his concept of the deformation index.
Michelle S. Hoo Fatt is an American mechanical engineer whose research concerns the mechanics of blasts, impacts, buckling, and the ability of sandwich-structured composite materials to resist blasts and ballistic impacts. She is a professor of mechanical engineering at the University of Akron.
Avraam I. Isayev University of Akron Distinguished Professor of Polymer Engineering known for widely used texts on rheology and polymer molding technology, as well as for development of technology for ultrasonic devulcanization of tire rubber.
Joseph Padovan is a retired University of Akron Distinguished Professor known for pioneering finite element procedures for analysis of rolling tires.
William J. van Ooij is a retired University of Cincinnati professor known for elucidating the mechanisms of brass-rubber adhesion in tires, and as the founder of corrosion resistant coatings company Ecosil Technologies
Samuel Kelly Clark was a professor in the Department of Engineering Mechanics at the University of Michigan who was known for contributions to the science of tires. His 1971 monograph Mechanics of Pneumatic Tires was considered by many in the tire industry to be its most important engineering text.
Marion G. Pottinger is an American mechanical engineer known for his work on tire footprint mechanics, tire wear and tire force and moment behavior.
David A. Benko is a retired Goodyear chemist and materials R&D director.
Joseph D. Walter is a retired American tire industry mechanical engineering researcher and former Bridgestone executive.