Bernard Haigh

Bernard Parker Haigh, MBE^[1] (8 July 1884^[2][3] – 18 January 1941)^[4][5] was a Scottish mechanical engineer. Haigh was educated at Allan Glen's School^[6] and the University of Glasgow He served as professor of applied mechanics at the Royal Naval College in Greenwich.

Bernard Parker Haigh
Professor Bernard Parker Haigh
Born	(1884-07-08)8 July 1884 Edinburgh, Scotland
Died	18 January 1941(1941-01-18) (aged 56) Greenwich, London, England
Nationality	Scottish
Citizenship	United Kingdom
Alma mater	University of Glasgow
Known for	Haigh diagram, Haigh-Westergaard stress space, Beltrami-Haigh yield criterion
Spouse	Mildred May Cole
Children	One
Scientific career
Fields	Applied mechanics
Institutions	University of Glasgow, Royal Naval College
Thesis	Alternating stress testing machine with record of researches carried out  (1915)

Haigh is known for his contributions in the fields of metal fatigue, welding and theory of plasticity. He is particularly known for Haigh diagram.^[7][8]

In 1913 Haigh became a lecturer in applied mechanics at the Royal Naval College.

Notable publications

• A new machine for alternating load tests (1912)^[9]
• Report on Alternating Stress Tests of a Sample of Mild Steel received from the British Association Stress Committee (1916) ^[10]
• Experiments on the fatigue of brasses (1917)^[11]
• Strain-energy Function and the Elastic-limit (1920)^[12][13]
• Strain-energy Function and the Elastic limit (1922)^[14]
• Stresses in Bridges (1924)^[15]
• Hysteresis in relation to cohesion and fatigue (1928)^[16]
• Electric welding as an integral part of structural design (1939)^[17]