Title of Invention	DESIGN OF A FIXTURE FOR CONDUCTING IMPACT TENSILE TEST OF PLANE AND WELDED SHEET METALS USING STANDARD IMPACT TESTER
Abstract	Main objective of present invention is to develop a special attachment for conducting impact tensile testing using standard pendulum type impact testing machine. The attachment is consisting of two small metallic part one of which is capable of holding any sheet samples (plane or welded). Other part is capable of receiving the impact from the pendulum and transmits it to the sample under test. The fixture is so develop that it can be fitted to the sample holder of any standard impact testing machine. The same pendulum and dial gauge with some correction factor are utilized for the test.

Title of Invention

DESIGN OF A FIXTURE FOR CONDUCTING IMPACT TENSILE TEST OF PLANE AND WELDED SHEET METALS USING STANDARD IMPACT TESTER

Abstract

Main objective of present invention is to develop a special attachment for conducting impact tensile testing using standard pendulum type impact testing machine. The attachment is consisting of two small metallic part one of which is capable of holding any sheet samples (plane or welded). Other part is capable of receiving the impact from the pendulum and transmits it to the sample under test. The fixture is so develop that it can be fitted to the sample holder of any standard impact testing machine. The same pendulum and dial gauge with some correction factor are utilized for the test.

Full Text	FIELD OF THE INVENTION: The present invention relates to a machine device attached to a testing machine to hold the metallic sample. More particularly, the present invention relates to an attachable device to a standard impact testing machine for testing of plane and weld steel sheets «5 mm thick) for assessing crash worthiness of sheet structure in automotives, BACKGROUND OF THE INVENTION: In any standard impact testing a selected specimen (usually square bar shaped) is struck and broken by a single blow of an hammer. The energy absorbed in breaking the specimen is measured and reported as toughness value of that material. Standard and sub-standard Izod and Charpy impact testing (ASTM E 23 - 05) are prevalent for evaluation of toughness of metal plates and their welds. However, these tests are not appropriate for sheet metal (thickness 2 1. Emin Bayraktar, Dominique Kaplan, Marc Grumbach; Application of impact tensile testing to spot welded sheets; Journal of Materials Processing Technology 153-154 (2004) 80-86. 2. Emin Bayraktar, Dominique Kaplan, Marc Grumbach; Application of impact tensile testing to welded thin sheets; Journal of Materials Processing Technology 145 (2004) 27-39 discloses on this subject are available which suggest about the impact tensile tests instead of conventional impact tests. These literatures say about some external support to the sheet so that the support along with the sheet can take the impact loading, but they do not reveal details regarding fixture, equipment and testing methodology. In this context the goal of present invention is to develop a fixture for conducting impact tensile testing of plane and welded sheet metals. OBJECTS OF THE INVENTION: It is therefore, an object of the present invention to propose an attachable device in a standard impact machine for testing of plane and weld steel sheets which eliminates the disadvantages of prior Art. 3 Another object of the present invention is to propose an attachable device in a standard impact machine for testing of plane and weld steel sheets which is handy and easy to operate. A further object is to propose an attachable device in a standard impact machine for testing of plane and weld steel sheets which is capable to measure toughness of plane steel sheets materials and welded steel sheets materials having thickness less than 5 mm. A still further object is to propose an attachable device in a standard impact machine for testing of plane and weld steel sheets which is economic in manufacturing and eco-friendly. An yet further object is to propose an attachable device in a standard impact machine for testing of plane and weld steel sheets which is attachable in any standard impact machine for testing activity. SUMMARY OP THE PRESENT INVENTION: Main objective of present invention is to develop a special attachment for conducting impact tensile testing using standard pendulum type 4 impact testing machine. The attachment is consisting of two small metallic part one of which is capable of holding any sheet samples (plane or welded). Other part is capable of receiving the impact from the pendulum and transmits it to the sample under test. The fixture is so develop that it can be fitted to the sample holder of any standard impact testing machine. The same pendulum and dial gauge with some correction factor are utilized for the test. BRIBF DESCRIPTION OP THE ACCOMPANYING DRAWING: Fig 1 - Shows a schematic drawing of standard pendulum type impact testing machine mounted with test specimen in prior Art a) Elevation, b) end view. Fig 2 - Shows a schematic drawing of the invented device (a) 'T' shaped steel block (b) wage block. Fig 3 - Shows a sheet sample mounted on the device. Fig 4 - Shows the invention device with attached sheet sample mounted on the holder of a standard impact testing machine. 5 DETAILED DESCRIPTION OP A PREFERRED EMBODIMENT OF THE INVENTION: As shown in 2, the device comprising (i) a 'T' shaped steel block member (1) and (ii) a wage block steel member (3). The 'T' shaped steel member provided with a inside thread hole (2) at the middle of one side web face and a recess (4) at the top to seat the wage block (3) after mounting of steel sample. The lower part (15) of 'T' shaped steel block (1) is inserted on the tool holder (5) of impact testing machine. The wage block (3) is provided with a inside threaded hole (6) at the bottom surface. As shown in Fig - 3 one end steel sheet sample (7) is fixed by a screw (8) inserted at the inside threaded hole (2) of one side web face of 'T' shaped steel block (1) and middle part (9) of the sample (7) rests on the top surface of 'T' shaped steel block (11) and the second end of the steel sample (7) rests on the inclined plane (10) of wage block (3). At the bottom face of wage block (3) the sample (7) is fastened by a 6 screw (11) inserted in the inside threaded hole (6) at the bottom surface of wage block (3). As shown in fig 4, the devices (1,3) mounted with sample (7) is placed on the tool holder (5) of the impact machine. The lower part (15) of 'T' shaped steel block (1) is fastened in between two jaws (12,5). One jaw (12) of the tool holder is fixed rectangular block end, the other jaw (5) is a movable wage block attached to a lever Arm (13). The gap between two jaws increased during upward movement of the movable jaw (5) and decreases on downward movement. The hammer or pendulum (14) drops from a fixed height which hits the wage block (3) and the sample experiences an impact tensile load and fails from the notched region. The notch is placed at the parent metal, on weld or on HAZ depending upon the zone of interest The total energy absorbed in the test is recorded from the dial gauge of the machine. Actual energy absorbed by the specimen is calculated from this dial gauge reading by subtracting the energy absorbed by the wage block when no sample is attached to it. 7 WE CLAIM: 1. An attachable device in a standard impact machine to hold plane or welded steel sheet material «5 mm thick) for impact testing comprises:- - a 'T' shaped steel block member (1) having a inside threaded hole (2) disposed at one side web face and a recess (4) at the top of surface of 'T' shaped block (1) during assembled condition with sample and a lower part (15) of 'T' block (1) for insertion in the holdering means of the machine; - a right angle shaped wage block (3) having a inside threaded hole (6) disposed at the bottom surface of the wage block (3) and - at least two screws (8,11) for fastening means of the specimen (7), one screw (8) is fixed with 'T' block (1) and second screw (11) is fastened with the wage block (3). 2. The device as claimed in claim 1, wherein one end of the steel sheet sample (7) is pinned by a screw (8) with 'T' shaped steel 8 block and the free end of the sample (7) is pinned by a screw (11) with the wedge block (3) which rests on the top surface of 'T' shaped steel block (1). 3. The device as claimed in claim 2, wherein the lower part (15) of 'T' shaped block after mounting with the specimen, is placed in the tool holding means of impact testing machine for testing. 4. The device as claimed in claim 1, wherein 'T' shaped block (1), right angle shaped wage block (3) and screws are made of steel material. 5. The process of impact testing with attachable device comprises :- - making a notch on the specification at desire location, - fixing one end of the specimen (7) with the 'T' shaped block (1) by atleast one screw (8); - fixing the other side of the specimen (7) with the wage block (3) by atleast one screw (II) and free end parts of specimen (7) is placed on the inclined plane of the wage 9 block (3) which is placed on the top surface of 'T' shaped block (1); - placing the lower part (15) at 'T' shaped blocks (1) into the holding means (5,2) of the impact machine including assembled with specimen; - allowing the hammer (14) of impact machine to free fall and to hit the wage block (3) which imparts a impact tensile load causing a breakage of specimen from notch region. - Recording the total absorb energy from the dial gauge. 6. The process of impact testing as claimed in claim 5, wherein the actual energy absorbed by the specimen (7) is measured from the dial gauge reading by subtracting the energy absorbed by the wage block (3) when no sample is attached to it, 7. The attachable device in a standard impact machine to hold plane as welded steel sheet material for impact testing as substantially described and illustrated herein with reference to the accompanying drawings. 10 8. The process of impact testing with attachable device as substantially described and illustrated herein with reference to the accompanying drawings. Main objective of present invention is to develop a special attachment for conducting impact tensile testing using standard pendulum type impact testing machine. The attachment is consisting of two small metallic part one of which is capable of holding any sheet samples (plane or welded). Other part is capable of receiving the impact from the pendulum and transmits it to the sample under test. The fixture is so develop that it can be fitted to the sample holder of any standard impact testing machine. The same pendulum and dial gauge with some correction factor are utilized for the test.

Full Text

FIELD OF THE INVENTION:
The present invention relates to a machine device attached to a testing machine to hold the metallic sample. More particularly, the present invention relates to an attachable device to a standard impact testing machine for testing of plane and weld steel sheets «5 mm thick) for assessing crash worthiness of sheet structure in automotives,
BACKGROUND OF THE INVENTION:
In any standard impact testing a selected specimen (usually square bar shaped) is struck and broken by a single blow of an hammer. The energy absorbed in breaking the specimen is measured and reported as toughness value of that material. Standard and sub-standard Izod and Charpy impact testing (ASTM E 23 - 05) are prevalent for evaluation of toughness of metal plates and their welds. However, these tests are not appropriate for sheet metal (thickness
2
1. Emin Bayraktar, Dominique Kaplan, Marc Grumbach; Application
of impact tensile testing to spot welded sheets; Journal of
Materials Processing Technology 153-154 (2004) 80-86.
2. Emin Bayraktar, Dominique Kaplan, Marc Grumbach; Application
of impact tensile testing to welded thin sheets; Journal of
Materials Processing Technology 145 (2004) 27-39
discloses on this subject are available which suggest about the impact tensile tests instead of conventional impact tests. These literatures say about some external support to the sheet so that the support along with the sheet can take the impact loading, but they do not reveal details regarding fixture, equipment and testing methodology. In this context the goal of present invention is to develop a fixture for conducting impact tensile testing of plane and welded sheet metals.
OBJECTS OF THE INVENTION:
It is therefore, an object of the present invention to propose an attachable device in a standard impact machine for testing of plane and weld steel sheets which eliminates the disadvantages of prior Art.

3
Another object of the present invention is to propose an attachable device in a standard impact machine for testing of plane and weld steel sheets which is handy and easy to operate.
A further object is to propose an attachable device in a standard impact machine for testing of plane and weld steel sheets which is capable to measure toughness of plane steel sheets materials and welded steel sheets materials having thickness less than 5 mm.
A still further object is to propose an attachable device in a standard impact machine for testing of plane and weld steel sheets which is economic in manufacturing and eco-friendly.
An yet further object is to propose an attachable device in a standard impact machine for testing of plane and weld steel sheets which is attachable in any standard impact machine for testing activity.
SUMMARY OP THE PRESENT INVENTION:
Main objective of present invention is to develop a special attachment for conducting impact tensile testing using standard pendulum type

4
impact testing machine. The attachment is consisting of two small metallic part one of which is capable of holding any sheet samples (plane or welded). Other part is capable of receiving the impact from the pendulum and transmits it to the sample under test. The fixture is so develop that it can be fitted to the sample holder of any standard impact testing machine. The same pendulum and dial gauge with some correction factor are utilized for the test.
BRIBF DESCRIPTION OP THE ACCOMPANYING DRAWING:
Fig 1 - Shows a schematic drawing of standard pendulum type impact
testing machine mounted with test specimen in prior Art a) Elevation, b) end view.
Fig 2 - Shows a schematic drawing of the invented device (a) 'T' shaped steel block (b) wage block.
Fig 3 - Shows a sheet sample mounted on the device.
Fig 4 - Shows the invention device with attached sheet sample mounted on the holder of a standard impact testing machine.

5
DETAILED DESCRIPTION OP A PREFERRED EMBODIMENT
OF THE INVENTION:
As shown in 2, the device comprising (i) a 'T' shaped steel block member (1) and (ii) a wage block steel member (3). The 'T' shaped steel member provided with a inside thread hole (2) at the middle of one side web face and a recess (4) at the top to seat the wage block (3) after mounting of steel sample. The lower part (15) of 'T' shaped steel block (1) is inserted on the tool holder (5) of impact testing machine. The wage block (3) is provided with a inside threaded hole (6) at the bottom surface.
As shown in Fig - 3 one end steel sheet sample (7) is fixed by a screw (8) inserted at the inside threaded hole (2) of one side web face of 'T' shaped steel block (1) and middle part (9) of the sample (7) rests on the top surface of 'T' shaped steel block (11) and the second end of the steel sample (7) rests on the inclined plane (10) of wage block (3). At the bottom face of wage block (3) the sample (7) is fastened by a

6
screw (11) inserted in the inside threaded hole (6) at the bottom surface of wage block (3).
As shown in fig 4, the devices (1,3) mounted with sample (7) is placed on the tool holder (5) of the impact machine. The lower part (15) of 'T' shaped steel block (1) is fastened in between two jaws (12,5). One jaw (12) of the tool holder is fixed rectangular block end, the other jaw (5) is a movable wage block attached to a lever Arm (13). The gap between two jaws increased during upward movement of the movable jaw (5) and decreases on downward movement. The hammer or pendulum (14) drops from a fixed height which hits the wage block (3) and the sample experiences an impact tensile load and fails from the notched region. The notch is placed at the parent metal, on weld or on HAZ depending upon the zone of interest The total energy absorbed in the test is recorded from the dial gauge of the machine. Actual energy absorbed by the specimen is calculated from this dial gauge reading by subtracting the energy absorbed by the wage block when no sample is attached to it.

7 WE CLAIM:
1. An attachable device in a standard impact machine to hold plane
or welded steel sheet material «5 mm thick) for impact testing
comprises:-
- a 'T' shaped steel block member (1) having a inside
threaded hole (2) disposed at one side web face and a
recess (4) at the top of surface of 'T' shaped block (1)
during assembled condition with sample and a lower part
(15) of 'T' block (1) for insertion in the holdering means of
the machine;
- a right angle shaped wage block (3) having a inside
threaded hole (6) disposed at the bottom surface of the
wage block (3) and
- at least two screws (8,11) for fastening means of the
specimen (7), one screw (8) is fixed with 'T' block (1) and
second screw (11) is fastened with the wage block (3).
2. The device as claimed in claim 1, wherein one end of the steel
sheet sample (7) is pinned by a screw (8) with 'T' shaped steel

8
block and the free end of the sample (7) is pinned by a screw (11) with the wedge block (3) which rests on the top surface of 'T' shaped steel block (1).
3. The device as claimed in claim 2, wherein the lower part (15) of
'T' shaped block after mounting with the specimen, is placed in
the tool holding means of impact testing machine for testing.
4. The device as claimed in claim 1, wherein 'T' shaped block (1),
right angle shaped wage block (3) and screws are made of steel
material.
5. The process of impact testing with attachable device
comprises :-
- making a notch on the specification at desire location,
- fixing one end of the specimen (7) with the 'T' shaped block
(1) by atleast one screw (8);
- fixing the other side of the specimen (7) with the wage
block (3) by atleast one screw (II) and free end parts of
specimen (7) is placed on the inclined plane of the wage

9
block (3) which is placed on the top surface of 'T' shaped block (1);
- placing the lower part (15) at 'T' shaped blocks (1) into the
holding means (5,2) of the impact machine including
assembled with specimen;
- allowing the hammer (14) of impact machine to free fall and
to hit the wage block (3) which imparts a impact tensile
load causing a breakage of specimen from notch region.
- Recording the total absorb energy from the dial gauge.
6. The process of impact testing as claimed in claim 5, wherein the
actual energy absorbed by the specimen (7) is measured from
the dial gauge reading by subtracting the energy absorbed by the
wage block (3) when no sample is attached to it,
7. The attachable device in a standard impact machine to hold plane
as welded steel sheet material for impact testing as substantially
described and illustrated herein with reference to the
accompanying drawings.

10
8. The process of impact testing with attachable device as substantially described and illustrated herein with reference to the accompanying drawings.

Main objective of present invention is to develop a special attachment for conducting impact tensile testing using standard pendulum type
impact testing machine. The attachment is consisting of two small metallic part one of which is capable of holding any sheet samples (plane or welded). Other part is capable of receiving the impact from the pendulum and transmits it to the sample under test. The fixture is so develop that it can be fitted to the sample holder of any standard impact testing machine. The same pendulum and dial gauge with some correction factor are utilized for the test.

Documents:

00071-kol-2007-correspondence-1.1.pdf

00071-kol-2007-form-18.pdf

0071-kol-2007 abstract.pdf

0071-kol-2007 assignment.pdf

0071-kol-2007 claims.pdf

0071-kol-2007 correspondence others.pdf

0071-kol-2007 description(complete).pdf

0071-kol-2007 drawings.pdf

0071-kol-2007 form-1.pdf

0071-kol-2007 form-2.pdf

0071-kol-2007 form-3.pdf

71-KOL-2007(13-09-2011)-ABSTRACT.pdf

71-KOL-2007(13-09-2011)-AMANDED CLAIMS.pdf

71-KOL-2007(13-09-2011)-CORRESPONDENCE.pdf

71-KOL-2007(13-09-2011)-DESCRIPTION (COMPLETE).pdf

71-KOL-2007(13-09-2011)-DRAWINGS.pdf

71-KOL-2007(13-09-2011)-FORM 1.pdf

71-KOL-2007(13-09-2011)-FORM 2.pdf

71-KOL-2007(13-09-2011)-FORM 5.pdf

71-KOL-2007(13-09-2011)-OTHERS.pdf

71-KOL-2007-(05-12-2011)-AMANDED PAGES OF SPECIFICATION.pdf

71-KOL-2007-(05-12-2011)-CORRESPONDENCE.pdf

71-KOL-2007-(05-12-2011)-OTHERS.pdf

71-KOL-2007-(13-09-2011)-PETITION UNDER RULE 137.pdf

71-KOL-2007-(23-02-2012)-CORRESPONDENCE.pdf

71-KOL-2007-(24-08-2012)-CORRESPONDENCE.pdf

71-KOL-2007-(24-08-2012)-FORM-13.pdf

71-KOL-2007-CORRESPONDENCE 1.1.pdf

71-KOL-2007-EXAMINATION REPORT REPLY RECIEVED.pdf

71-KOL-2007-OTHERS.pdf

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Patent Number

258857

Indian Patent Application Number

71/KOL/2007

PG Journal Number

07/2014

Publication Date

14-Feb-2014

Grant Date

11-Feb-2014

Date of Filing

19-Jan-2007

Name of Patentee

TATA STEEL LIMITED

Applicant Address

JAMSHEDPUR 831001

Inventors:

#	Inventor's Name	Inventor's Address
1	SUJIT CHATTERJEE	TATA STEEL LIMITED, JAMSHEDPUR 831001
2	MAHADEV SHOME	TATA STELL LIMITED, JAMSHEDPUR-831001

PCT International Classification Number

G01M7/00

PCT International Application Number

N/A

PCT International Filing date

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1			NA