INTERNAL STRAINS IN •GUN FORGINGS.
342
Tube 20691 B3.
Breech Slice.
State of internal strains and stresses at different phases of the slice.
SLICE INTACT.
. Interior diameter of slice, 4".73; exterior diameter of slice, 10".50.
Rings.	Present mean diameters.	Strains.		Stresses per square inch.	
		Tension.	Compres- sion.	Tension.	Compres- sion.
	Inches. 4.8763 5.64665 9.64915 10.3184	Inch.	Inch. . 00555 . 0012	Pounds.	Pounds. 34,100 6,400
					
		. 00315		9,800	
			.0007		2,000
					
Rings 1 and 4 detached; rings 2 and 3 in the slice.
Interior diameter of slice, 5". 50; exterior diameter of slice, 9".80.
1	3 			 1 1־ J	u		1		
Rings.	Present mean diameters.	Strains.		Stresses per square inch.	
		Tension.	Compres- sion.	Tension.	Compres- sion.
	Inches. 4.88185 5.64565 9.6484 10.3191	Inch.	Inch.	Pounds.	Pounds.
			.0022		11,700
		.0024		7,500	
					
					
RINGS ALL DETACHED.
	5.64785 9.6460