slide1 n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Briefer Name Name Dr. Eui W. Lee Phone: 301-342-8071 Fax: 301-342-8120 PowerPoint Presentation
Download Presentation
Briefer Name Name Dr. Eui W. Lee Phone: 301-342-8071 Fax: 301-342-8120

Loading in 2 Seconds...

play fullscreen
1 / 13

Briefer Name Name Dr. Eui W. Lee Phone: 301-342-8071 Fax: 301-342-8120 - PowerPoint PPT Presentation


  • 204 Views
  • Uploaded on

Briefer Name Name Dr. Eui W. Lee Phone: 301-342-8071 Fax: 301-342-8120 Address: Building 2188, NAS Pax River E-mail:leeew@navair.navy.mil. Investigators : Dr. Eui W. Lee M. Leap B. Taylor H. Sanders.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Briefer Name Name Dr. Eui W. Lee Phone: 301-342-8071 Fax: 301-342-8120' - clark-madden


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide1

Briefer Name

Name Dr. Eui W. Lee

Phone: 301-342-8071

Fax: 301-342-8120

Address: Building 2188, NAS Pax River

E-mail:leeew@navair.navy.mil

Investigators:

Dr. Eui W. Lee

M. Leap

B. Taylor

H. Sanders

Task Objective: Demonstrate and validate the viability of HVOF coating on the Navy aircraft components.

thrusts
Thrusts
  • Fatigue and tensile samples for JTP are 1/4” diameter configuration
  • There are differences between small samples and real components in terms of coating characteristics -the ratio between the coating and sample thickness-impingement angle: small for the small samples
slide9

HVOF COATED TUBULAR FATIGUE SPECIMENS

R = -1

HVOF 17

(3)

DSP-1000

SPECIMEN

a

NO VISIBLE

SPALLING

STEPPED STRESS TESTS STARTED AT 150 ksi

220

)

i

s

k

(

G

N

I

200

L

L

STEPPED STRESS TEST

A

SINGLE STRESS TEST

P

S

E

L

180

B

I

S

I

V

R

O

F

160

S

S

E

R

T

S

140

L

A

I

X

A

120

220

)

i

s

k

(

G

N

I

L

L

200

A

P

S

E

L

B

I

S

I

V

180

R

O

F

S

S

E

R

T

160

S

L

A

I

X

A

140

0.005

0.006

0.007

0.008

0.009

0.010

0.011

0.012

0.013

HVOF COATING THICKNESS (in.)

HVOF COATED TUBULAR FATIGUE SPECIMENS

R = -0.33

(2)

b

(2)

NO VISIBLE

(2)

SPALLING

STEPPED STRESS TESTS STARTED AT 160 ksi

slide11

HVOF COATED TUBULAR FATIGUE SPECIMENS

R = -1

HVOF 17

(3)

DSP-1000

SPECIMEN

(2)

a

NO VISIBLE

SPALLING

HY TUF STEEL

220

)

i

s

k

(

G

N

200

I

L

STEPPED STRESS TEST

L

A

SINGLE STRESS TEST

P

S

E

180

L

B

I

S

I

V

R

O

160

F

S

S

E

R

T

S

140

L

A

I

X

A

120

220

)

i

s

k

(

G

N

I

L

200

L

A

P

S

E

L

B

I

S

I

180

V

R

O

F

S

S

E

R

160

T

S

L

A

I

X

A

140

0.005

0.006

0.007

0.008

0.009

0.010

0.011

0.012

0.013

HVOF COATING THICKNESS (in.)

HVOF COATED TUBULAR FATIGUE SPECIMENS

R = -0.33

(2)

b

(2)

NO VISIBLE

(2)

SPALLING

HY TUF STEEL

slide12

Morphology of spalling exhibited by HVOF coatings in axial fatigue tests at R = -1: (a) specimen HVOF 8 (0.0055 in. coating), stepped stress test to 180 ksi and (b) specimen HVOF 4 (0.0055 in. coating), stepped stress test to 200 ksi (spalling failure near the end of the gage section) followed by testing at 210 ksi (spalling failure in the gage section).

slide13

Morphology of spalling exhibited by HVOF coatings in axial fatigue tests at R = -0.33: (a) specimen HVOF 7 (0.006 in. coating), stepped stress test to 190 ksi; (b) specimen HVOF 14 (0.009 in. coating), stepped stress test to 180 ksi, and; (c) specimen HVOF 30 (0.01225 in. coating) tested at 160 ksi. Arrows in (a) indicate regions of localized delamination and circumferential cracking (i.e., incipient spalling) in the gage section.