公开(公告)号：US3029943A

公开(公告)日：1962-04-17

申请号：US53348255

申请日：1955-09-09

Applicant: GEN MOTORS CORP

Inventor： DIAMOND MILTON J ,  SCHUBRING NORMAN W ,  WELLER JR EDWARD F

IPC: G01N29/04

CPC classification number: G01N29/045 ,  Y10S209/903 ,  Y10S209/925 ,  Y10S209/933

公开(公告)号：US2645341A

公开(公告)日：1953-07-14

申请号：US17345750

申请日：1950-07-12

Applicant: GEN MOTORS CORP

Inventor： DIAMOND MILTON J

IPC: G01N27/80

CPC classification number: G01N27/80

公开(公告)号：US3089084A

公开(公告)日：1963-05-07

申请号：US1698060

申请日：1960-03-23

Applicant: GEN MOTORS CORP

Inventor： DIAMOND MILTON J ,  SPAIN ROBERT F

IPC: G01N27/90

CPC classification number: G01N27/9033

公开(公告)号：US3003628A

公开(公告)日：1961-10-10

申请号：US61626756

申请日：1956-10-16

Applicant: GEN MOTORS CORP

Inventor： DIAMOND MILTON J ,  FREDRICKSON PHILLIP O ,  SPAIN ROBERT F

IPC: G01N29/04

CPC classification number: G01N29/045

公开(公告)号：US2689042A

公开(公告)日：1954-09-14

申请号：US16143350

申请日：1950-05-11

Applicant: GEN MOTORS CORP

Inventor： DIAMOND MILTON J

IPC: G01N27/80

CPC classification number: G01N27/80

公开(公告)号：US3504825A

公开(公告)日：1970-04-07

申请号：US3504825D

申请日：1966-08-15

Applicant: GEN MOTORS CORP

Inventor： DIAMOND MILTON J ,  KINSEY ROBERT J

IPC: B22D39/06 ,  B22D17/32 ,  F27D3/14

CPC classification number: B22D39/06

公开(公告)号：US3213280A

公开(公告)日：1965-10-19

申请号：US5173860

申请日：1960-08-24

Applicant: GEN MOTORS CORP

Inventor： BURLEY HARVEY A ,  DIAMOND MILTON J ,  DANFORTH JOHN P ,  BLOCK ARTHUR D

IPC: G01N23/204 ,  G01N33/38

CPC classification number: G01N23/204 ,  G01N33/38

公开(公告)号：US2876508A

公开(公告)日：1959-03-10

申请号：US68938757

申请日：1957-10-10

Applicant: GEN MOTORS CORP

Inventor： AMALA RAYMOND S ,  DIAMOND MILTON J

IPC: B22C7/06 ,  B22C15/24 ,  B22C23/00

CPC classification number: B22C15/245 ,  B22C7/065 ,  B22C23/00

公开(公告)号：US2719224A

公开(公告)日：1955-09-27

申请号：US15341750

申请日：1950-04-01

Applicant: GEN MOTORS CORP

Inventor： DIAMOND MILTON J

IPC: G01N27/80

CPC classification number: G01N27/80

公开(公告)号：US3603136A

公开(公告)日：1971-09-07

申请号：US3603136D

申请日：1969-11-25

Applicant: GEN MOTORS CORP

Inventor： DIAMOND MILTON J ,  LUTCH ROBERT H

IPC: G01N29/07 ,  G01N29/00 ,  G01H5/00

CPC classification number: G01N29/07

Abstract: A method and apparatus for determining the percent nodularity of a workpiece as a function of the speed of ultrasonic sound through the workpiece. According to a first embodiment this is achieved by positioning the workpiece at a predetermined distance from an electroacoustic transducer and in a second embodiment by positioning the casting between two electroacoustic transducers which are spaced at a predetermined distance. DC voltage signals relating the time between the generation of the ultrasonic impulses and the detection of back reflection impulses by the electroacoustic transducers are combined by a signal-generating circuit in accordance with an empirical relationship so as to generate a DC voltage output signal proportional to the percent nodularity of the workpiece.