John J Munyak

58119701, Sep 22, 1998

May 10, 1996

8/644778

Kevin H. Cook - Farmingdale NY
John J. Munyak - Nesconset NY
William H. Pember - Palm City FL

Northrop Grumman Corporation - Los Angeles CA

G01N 2790
G01R 3312

324233

An electromagnetic or eddy-current test for microstructure anomalies such as alpha-case in titanium alloys, and for carbide precipitates and untempered and overtempered martensite in steel alloys. The inspection is designed to provide an accurate, reproducible, cost effective, and nondestructive approach to detect and isolate discrepant parts exhibiting an unsatisfactory microstructural condition. The test method utilizes high frequency eddy-current test equipment, having an eddy-current test probe and a display screen, on a reference metallurgical standard to establish a reference level trace signal of phase amplitude response therefor on the display screen. The high frequency eddy-current test equipment is then utilized on a metallurgical sample being tested for the presence of the deleterious structural condition, to derive a trace signal of phase amplitude response therefor on the display screen. The level of the trace signal of phase amplitude response screen for the reference standard is compared on the display with the level of the trace signal amplitude response for the metallurgical sample being tested, to determine if the metallurgical sample has the particular deleterious condition for which it is being tested. The test method can use both acceptable and nonacceptable reference metallurigical standards to establish reference level trace signals of phase amplitude response therefor on the display screen.

20170038341, Feb 9, 2017

Aug 4, 2015

14/818138

- FALLS CHURCH VA, US
KEVIN L. BOYD - MELBOURNE FL, US
KEVIN H. COOK - EAST FARMINGDALE NY, US
CHRIS FAMIGHETTI - MELBOURNE FL, US
ROBERT D. FIDNARICK - SEAFORD NY, US
JOHN MUNYAK - NESCONSET NY, US
JOHN D. WEIR - HUNTINGTON NY, US

G01N 29/06
B64F 5/00

A phased array transducer for inspecting a fastener hole and adjacent structure to identify defects and determine hole integrity without removing the fastener from the hole. The phased array transducer includes a plurality of transducer elements, where one of the transducer elements is used to align the transducer to the hole, one group of the remaining transducer elements inspects the entire thickness of the structure at one side of the fastener and another group of the remaining transducer elements inspects the entire thickness of the structure at an opposite side of the fastener.