The Boeing Company

Nihar Ashokkumar Desai

Michael Walter Evens

John F Spalding

David Walter

Genesis Marvin Pilarca

Dan Perron

Timothy S Barrett

Ebonni J Adams

Nicole Titus

Shekar Vimala

Gary E Georgeson

Jeong-Beom Ihn

Lyle Ray Deobald

Mark Ronald McLaughlin

Thomas Joseph Kennedy

David Bruce Smith

Michael Robert Rush

Shahrooz Mark Jahanbin

Colin Lee Farr

Shane Frank Cuda

Joshua Amory Ross

Mark Ronald Mclaughlin

David M Walter

Shahrooz M Jahanbin

A surface roughness analysis system and methods of analyzing surface roughness of a workpiece are presented. The surface roughness analysis system comprises a number of wave generators; a number of wave sensors; and an ultrasonic analysis system configured to receive material mechanical parameters for a workpiece, determine incident surface wave signal parameters for a source signal to be sent by the number of wave generators, and determine a cut-off wavelength using the material mechanical parameters, wherein the cut-off wavelength is a ratio of surface wavelength over incident wavelength.

Surface roughness analysis system and methods of analyzing surface roughness of a workpiece

Methods for reworking structures and reworked cellular core panels, reworked structures comprising the reworked cellular core panels, and guides and cutting apparatuses for reworking cellular acoustic panels and reworking cellular acoustic and non-acoustic panels are disclosed.

Structural rework of cellular core panels

Methods for reworking structures and reworked cellular core panels, reworked structures comprising the reworked cellular core panels, and guides and cutting apparatuses for reworking cellular acoustic panels and reworking cellular non-acoustic panels are disclosed.

A stiffened panel comprises a composite panel, and a stiffener including a base flange on the composite panel. The base flange is tapered towards the panel. The stiffened panel further comprises a composite overwrap layer on only the composite panel and a tapered surface of the base flange.

Stiffened composite panels

Growing community of inventors

Bothell, WA, United States of America

Nihar Ashokkumar Desai