DE102010037979A1 - Pendulum ram impact testing machine for testing properties of material, has active mass portion which is defined with initial energy in accelerated movement along arc shaped path of inspection location for retaining sample of material - Google Patents

Abstract

The testing machine (10) has an active mass portion (40) which is communication with a primary frame (20). The force of active mass portion is exercisable towards the sample of material (188). The active mass is defined with initial energy in an accelerated movement along an arc shaped path of the inspection location (106) for retaining the sample of material. A secondary frame (30) is used as holding and installation frame for operation units (70,74,76,78, 80,82,90,110,118,124,136) of the impact tester. The secondary frame is independent of the primary frame. An independent claim is included for method for testing material.

Description

The present invention relates to a material tester of the pendulum impact type, with a material sample such. B. a segment of an oil line is exposed in a test a sudden stress test. In this case, load forces can be exerted on a sample which are of the order of magnitude that can occur, for example, in the case of rockfall on pipelines, tectonic stresses or impact loads on supporting or supporting structures of buildings, bridges or ships (defined point loads, eg in one Range of the test energy of 5 kJ, alternatively from 30 kJ to more than 50 kJ).

State of the art

Material testing machines to investigate the fracture or. Deformation behavior of material samples under sudden loads are known in many embodiments. According to the patent DE 32 34 611 C2 (Owner: Mannesmann AG, filing date: 15.9.1982) is a case study for material samples is known in which a case weight, starting from a holder on a drop frame, a sample strikes in the direction of a foundation. High test energies are realized here in particular from large drop heights when accelerating a mass in quasi free fall on a test sample. The residual energy of the drop weight is destroyed after the sample has penetrated with shock absorbers. Measurement inaccuracies arise, for example, from relative movements of the sample support arranged on different foundations and the drop frame, by bouncing in the area of the test sample and by air movement, uncontrolled friction losses as a result of triggering and case or inaccuracies with respect to the place of impact of the drop weight on the test sample. Such testing machines are used to examine so-called Battelle samples

In another group of impact test equipment, as in US Pat. No. 6,990,845 B2 (Applicant: University Putra Malaysia, filing date: 17.11.2003) a striking element in the form of a pendulum against a sample, which may be, for example, a vehicle component out. Other versions of pendulum impact are, for example, in DE 518 969 A (Applicant: AI Amsler, filing date: 08.11.1927) or in GB 376,726 (Filing date: 10.01.1931). The maximum occurring due to the inertial force on the measurement sample in the force-displacement diagram usually at high impact speeds on a stationary measurement sample leads to the excitation of material vibrations and influences the fracture behavior. Therefore, in EP 0 027 257 A1 (Applicant: VALTION TEKNILLINEN TUTKIMUSLAITOS, filing date: 09.10.1980) the avoidance of the influence of the mass inertia of a material sample by accelerating the sample ends when the pendulum hammer hits the material test is discussed.

By armoring a pendulum head of a pendulum impact to DE 92 14 158 U1 (Owner: Siemens AG, filing date 20.10.1992) energy losses are reduced by deformation of the pendulum head in the impact, which can falsify the test results.

A pendulum impact tester for examining, for example, oil pipes which are already subjected to a preload in the impact experiment, is in US 4,442,697 (Owner: InterNorth Inc., filing date: 19.03.1982).

Various methods for determining the test energy of a pendulum z. B. by angle measurement before and after a Prüfstoß go out of the DE 4 025 135 C1 (Owner: Fraunhofer Gesellschaft eV, filing date: 08.08.1990), the DE 26 42 273 C3 (Owner: Zwick GmbH & Co., filing date: 21.09.1976), the DE 26 42 018 A1 (Applicant: Zwick GmbH & Co., filing date: 18.09.1976) and the DE 7 538 946 U (Applicant: Zwick & Co. KG, filing date: 06.12.1975).

A tempering device for a notched-impact bending test system is the subject of DD 261 720 A3 (Applicant: Technische Hochschule "Carl Schorlemmer" Leuna-Merseburg, filing date: 22.11.1985). A plant for large - scale investigations into the notched impact bending behavior of material samples and corresponding procedures for the implementation are in the DE 10 103 582 A1 (Applicant: Forschungszentrum Karlsruhe GmbH, filing date: 26.01.2001).

Such pendulum impact or such in the DIN 51 222 For example, pendulum impact testers are used for material testing according to the "Charpy" method DIN EN 10045 or for exams after ASTM E 23 standard used on standardized material sample geometries with a notch as predetermined breaking point. Of particular interest to producers and suppliers of liquid or gaseous energy sources, however, are tests according to the Standards ASTM E 436-71T . API-RP 5L3 as well as after DIN EN 10274 or testing to monitor compliance with standards in accordance with such standards by manufacturers of appropriate facilities for the transport and extraction of energy.

The previously mentioned material testing machines for the investigation of materials under sudden loads, in particular Pendulum impact testers, and their representations in the cited documents replace the detailed representation of the function, the components and the interaction of these components at this point and apply to their referencing as fully contained in the present description.

Technical difficulties

Carrying or enclosing assemblies of technical equipment can be extremely high material loads in abrupt stress z. With energies in the range of 50,000 joules (50 kJ). Similar tests are carried out with comparatively much lower energies (eg 750 joules). Therefore, there is a need for such systems to suspend envisaged component materials prior to the use of a test for approval under appropriate loading forces. It is known that the fracture behavior of material samples is closely related to the dimension of the sample being tested. As a particular difficulty proves the disturbance of the material testing by foreign influences, eg. B. by (slightly) wobbling pendulum, falsified starting energies or vibrations of the material testing machine. The slowing down of a large weight from free fall can have a detrimental effect on the existence of the foundation due to a short-term high energy input. A particular requirement of such testing machines is the precise determination of the proportion of energy by which work is performed on a material sample during the testing process. Of particular interest here is the fracture behavior of material samples. Due to the amount of energy to be used for the examination, the most prudent treatment of the energy used is recommended.

In summary, it can be stated, although or even because with high energies the pendulum impact such. B. a large load pendulum operates, the quality of measurement is particularly important. It can also be said that the high-energy pendulum should as far as possible be approximated to the technological pendulum.

invention description

The object of the invention is achieved by a pendulum impact tester according to claim 1. A particularly advantageous test method is described in claim 13. Advantageous developments can be found in the dependent claims.

In a pendulum impact tester, an active mass is accelerated under the influence of gravitational force from a point of origin to a test site so that a test energy can be applied to a test sample, a material sample, to determine the consumed energy received by the test sample. Particularly critical are tests using large-scale pendulums, such as a pendulum impact tester according to the present invention, in which using the effective mass test energies and thus consumption energies in the kilojoule range can be exercised, for example, gradually adjustable active energies between 40 kilojoules and 50 kilojoules.

Ideally, high-load pendulum tests are designed for a very specific effective mass, in which the actual pendulum present during the experiment as an idealized pendulum, d. H. as a technological pendulum, may be accepted. For this purpose, the present invention proposes numerous measures. The pendulum is attached via filigree guide arms as possible at a pivot point of a first frame and the essential mass of the pendulum is U-shaped around a fin as impact structure, so that the active mass may be accepted as a punctual impact mass in the fin (for experimental purposes). The guide arms are designed to be much weaker compared to the clamp-like designed pendulum with two jaws and a fin lying between them, d. they do not even weigh 10% of the pendulum weight. Thus, the actual mass of the pendulum is distributed so that a technological pendulum, concentrated in the fin, can be assumed when the pendulum, more precisely the fin, bears on the test specimen resting on the abutment with the test energy in the horizontal test direction, d , H. perpendicular to gravity, acting to determine the consumption energy of the test sample, determined by the sensors of the heavy duty pendulum, after the impact.

The effective mass is the sum of the mass of the guide arms of the pendulum and the mass of the pendulum weight body including the impact structure and all other attached to the pendulum weight body auxiliary units, such as the brake pads. In other words, the effective mass is the total mass of the oscillating pendulum structure. Due to the dynamics of the pendulum motion, the effective mass in the technological pendulum is assigned a reduced pendulum length. This reduced pendulum length corresponds to the distance between the pendulum support in the guide bearing and a location to be determined by known calculation method in pendulum weight body. This location is spaced from the location of the physical center of mass in the pendulum, which is included in a calculation of the pendulum position of a physical pendulum. At the position corresponding to the reduced pendulum length, the impact structure, in particular a center of the beating surface of the pendulum, is arranged. Advantageously, a possible generation of torques of the active mass is thus suppressed in the pendulum stroke.

The active mass is connected to a first frame of the pendulum impact. In this case, the connection is a load-bearing movable connection, by which the weight of the active mass and in particular centripetal forces of the active mass of the active mass are directed to the first frame. Thus, there is a deflection of these forces on the first frame on the support structure on which the first frame is attached.

The pendulum according to the invention can, starting very controlled with a clearly defined initial energy, perform an accelerated movement up to the test site. As mechanical friction losses during accelerated movement, only the guide bearings at the inner end of the guide arms, the end of the guide arms, which is the farther end of the fin of the guide arms to take into account. To reduce the friction losses in the guide bearing low-friction roller bearings such as rolling element bearings with barrel-like, bulged barrel rolling elements exist on which rest the guide arms. The first frame is constructed similar to a double-A-sheet, with no other units are mounted on this frame to change the position of the pendulum. In the first frame is only the fixation point for the effective mass of the pendulum impact, which corresponds to the almost ideal shape of a technological pendulum. The active mass is attached in the top of the double-A-shaped frame with a Anlängung. A bearing which connects the active mass and the first frame is rotatable, wherein the active mass is guided around the fixed point by at least one guide arm on the guide bearing in a plane which encloses the test site.

The extension of the active mass on the guide bearing consists of at least one guide arm, the mass distribution in the active mass ensures a linear derivation of the weight forces of the dormant hanging active mass to the fixed point and the guide arm is free of bending moment.

The Großlastpendelschlagwerk has separately carried out a second frame. The second frame bridges the first frame, so that, in particular, an enclosure of the first frame through the second frame is present. There is a separation of the frame frame for the pendulum of the rack for aggregates for presentation of auxiliary functions, so-called operating units, given. Mounting and installation of such auxiliary function units takes place on the second z. B. designed as a dome-like support frame frame.

The two frame frames are mechanically decoupled from each other. Both frames are exclusively connected via the same base plate or a Schabotte. Neither cross struts between the frame still screwed or welded between the frame frame are present. Under the base plate is a foundation, z. B. a concrete foundation with reinforcement, which represents the largest mass of the Großlastpendelschlagwerks. On the base plate or on the concrete foundation rests the abutment block, which supports the material sample against the active material in a material test. Due to the separate structure of the two frames and the exclusive connection over a massive, heavy, that is a multiple, z. Example, the fivefold, the weight of the frame frame weighing support structure, which is composed of base plate and / or Schabotte and concrete foundation for anchoring, there is a strong damping abstoßbarer vibration amplitudes that may be present in one of the two frame frame. Thus, a transmission of vibration amplitudes from the first to the second frame or from the second to the first frame is not given. The separation of functions between the frames or the respective tasks of the frame frames are complete, and thus they are consistently implemented. The pendulum is realized with a Schlagfinne and stored on the inner frame. Auxiliary equipment such as a lifter, a brake, a sample feeder, a sample evacuator, and sensors such as a video camera and safety lock bars are attached either to the outer enclosing frame or to the base or foundation. The experimental energy decoupling of the two racks ensures in this way the determinability of the energetic test conditions.

An operating unit that allows the ease of use of the high-load pendulum, is the return truck, which performs the function of a lifting device. The return car is constructed in several parts. The retrieval cart includes a clutch mechanism such as a trip pawl, a guide collar, or a track rail supporting casters, and a torque motor that rotates the pendulum to a freely adjustable initial position, for example, an angular position of 135 ° backward compared to the test site around the fulcrum, is carried. The lifting force for the movement of the pendulum to the initial position is completely and directly supported on the second frame.

A second operating unit for the controlled execution of material tests is a brake unit which is mounted on the second frame, and which is used to immobilize the active mass after a material testing forces completely over the second frame. The brake unit comprises at least one friction surface, which by hydraulic cylinders in frictional connection with the Active mass can be brought. By attacking the friction surface of brake pads of the active mass, the brake blocks are mounted according to the reduced pendulum length from the guide bearing spaced from the active mass, a frictional connection between active mass and brake unit for the at least one guide arm of the active mass is free of bending moment.

The return carriage engages with a coupling mechanism via the pawl directly to the pendulum weight. As a result, the guide arms are free of bending stress, because the pendulum is no longer raised over the guide arms, but these lead the pendulum only during the impact test. This makes it possible to realize the guide arms as lightweight suspension arms. The Arretieraggregatbremseinrichtung acts directly and directly on the pendulum weight. By this measure takes place during the braking operation after reaching the turning point, after having been swept through the Prüfort, no further bending load of the guide arms instead. The influence of air resistance during the impact test is reduced by phase edges on the guide arms. In addition, the largest mass fraction of the pendulum is combined in pendulum weight. As a result, a reduced pendulum length with approach of the impact structure "fin" to the pendulum axis is possible.

The energy input is based on a potential initial energy, which is infinitely adjustable with transport of the active mass fixed on the return carriage by the return truck. The setting makes it possible to approach an arbitrary position for the initial energy again and again. The return carriage assumes a position on the rail, following its set value. The potential initial energy is this from a motionless initial position of the center of gravity of the active mass, z. B. from a height above the sample storage and the weight of the active mass calculated. The position is determined z. B. by measuring an angular position with a rotary angle on the pivot bearing of a pendulum suspension from a known pendulum length.

The roller-mounted rail of the return carriage represents a Verbringungsweg for the return carriage, on which the return carriage can take any height positions. The path between the various positions is preferably arcuate, with the bearing of the active mass or pendulum lying in a center to the arcuate path. In this case, a path which the clutch mechanism or the effective mass on the return carriage describes between two positions of the active mass is longer than the distance traveled by the return car at the same time.

After releasing the clutch mechanism and the material testing, the active mass continues to move to a rest position or reversal position, wherein a deceleration of the active mass is effected by gravity. The potential energy of the active mass in the second rest position is determined from a measurement of a position measuring device such as the rotary angle of the pendulum. These. potential energy of the active mass after the material test is to subtract from the potential initial energy to determine the energy input.

The consumption energy of the test sample, such as a standardized impact test, can be determined from the residual energy measurement of the pendulum according to a calculation method. Due to the advantageous storage of the pendulum and the reduction of the aerodynamic drag of the pendulum can be determined from the pendulum to the reversal point according to a first calculation method, the consumption energy. The consumption energy comprises in particular kinetic energy, deformation energy, heating energy and energy of fracture. In the fracture, a material sample is split into at least two parts. Material failure due to brittle fracture with little deformation of the material sample is distinguishable from a ductile or ductile fracture with severe deformation upon impact with a material sample.

In addition, a second determination method is provided in the impact fin by at least one force sensor, for example one which works with strain gauges and which can be interrogated electronically. As a third method for determining the energies, a drop height measurement and a residual height measurement are determined via a non-contact, ie via a frictionless, angle measurement. In addition, a high-speed video camera can be installed in the area of the abutment block, which additionally evaluates the behavior of the material sample during the impact. By a combination of the various measurement methods can be, although a large-load pendulum impact tester according to the invention for experimental energies of z. B. 50,000 Joule is designed to identify the consumption energy with a resolution in a range below 1 joule. The return trolley detaches itself from the pendulum weight without exerting a lateral impulse on the pendulum weight, in that the pawl web can jerkily and thus without friction pull out of the release pawl of the pendulum weight.

The energy input into the material sample takes place in a test procedure independent of external influences. The inventive arrangement of the pendulum impact tester in a kneading frame and an auxiliary equipment frame no influence of the auxiliary equipment frame or other external sources of interference on the movement of the pendulum impactor and the energy flow during the movement of the active mass against the material sample. This results in the entry of energy into a material test with greater accuracy than is known from other pendulum impact testers. In this case, no forces such as vibration forces, displacement forces or tension forces are transmitted from the second frame and the units attached thereto via the first frame to the pendulum. Likewise, no transfer of such forces via aggregates, such as the abutment block, which are attached to a supporting structure of the pendulum impact, on the interface between impact structure and material sample or between material sample and sample storage. Such forces usually represent a foreign influence of the material testing. The exact size of such a foreign influence in a material testing is experience indeterminable.

The calculation of the energy input in material tests of sudden material failure occurs in the arithmetic unit. A difference between potential energy of the active mass before the test and potential energy of the active mass after the test is corrected for free-wheeling losses. Freewheel losses are, for example, energy losses of the pendulum to the pendulum environment. Such low energy losses are caused by friction in guide bearings or displacement of ambient air by the pendulum motion. These losses can be determined in good accuracy with a pendulum moving freely from the initial energy position, ie without a material sample at the test location. The inclusion takes into account a scaling to the actual path length of the proof mass in a material test. These losses are included in the difference between two potential energies of the active mass by calculation methods, which results in the energy input into the material sample during the material testing.

The high-load pendulum impact tester according to the invention embodies various concepts according to the invention. According to one aspect, an energetic decoupling takes place, which means an experimental energy splitting, between the first frame with the experimental pendulum and the operating aggregates, which are fastened to the second frame or to the scraper. In another aspect, numerous error effects are eliminated or reduced, e.g. B. the drag during the pendulum stroke by a c _w value-favorable pendulum arm design using frontal slopes or phases.

The arranged in the ground mass over which the two racks are screwed, takes in a damping manner on the respective frame introduced energy and it can be assumed that a (almost complete) decoupling between the racks. The operating units, z. As the Arretieraggregate for setting the pendulum or Arretieraggregat for additional security and safety of the operator, are attached to the second, the first frame externally comprehensive frame. An additional safety catch provides for a second setting of the pendulum weight, whereby the safety latch for calibrating the pendulum impact tester can be used by measuring the weight of the pendulum weight on the safety latch in the resting position of the pendulum before the pendulum is triggered.

Brief Description

The present invention can be better understood by reference to the two figures, wherein

1 in side view a Großlastpendelschlagwerk enclosing it with safety frame and housing in a schematic representation and shows

2 shows in perspective internal and ground-level components and units of the heavy duty pendulum in a perspective view.

figure description

The following is intended to contribute to the promotion of understanding, the 1 and 2 described at the same time. While 1 the pendulum hammer 10 in a schematic representation with its housing 160 as outer boundary shows 2 some, internal components of the pendulum impact 10 as the locking unit braking device 110 , the first frame 20 , the sample magazine 192 , and the foundation 150 with the base plate 140 ,

The first, inner frame 20 is a multi-part frame made up of sub-frames 22 and a connection yoke 24 composed. Outside the first frame 20 limited a second frame 30 the interior of the pendulum impactor 10 , The second frame 30 offers attachment points for operating units 70 . 90 . 110 and not for the actual pendulum 15 with his active mass 40 attributable components, such as for the roller carriers 32 . 33 . 34 . 35 on which the double rollers 82 and the single rollers 84 are attached. The second frame 30 has a securing bolt holder 36 at which the locking unit securing bolt 90 with its calibration sensor 92 is attached. In the rest position of the pendulum 15 can via the calibration sensor 92 the weight of the pendulum, z. B. in an exact 90 ° -Winkellage the pendulum, ie, when the pendulum 15 from the test site 106 who is at Abutment Bock 100 is turned back 90 ° counterclockwise. The securing bolt holder guides the weight of the pendulum 15 exclusively on the second frame 30 in the base plate 140 from. The base plate 140 is over tension anchor 152 on the foundation 150 attached. The base plate 140 , which represents the Schabotte, serves as a mounting plate for the abutment block 100 and a high-speed camera 104 covering the area around the sample warehouse 102 on the abutment block 100 can measure. Furthermore, on the second frame 30 supporting arch 38 present over which the energy of Arretieraggregats braking device 110 in the second frame 30 can be dissipated.

The pendulum 15 with his active mass 40 is about his leadership arms 60 . 62 at the guide camp 64 that is in the top of the first frame 20 is present, hinged. In the leadership camp 64 is a position sensor 66 installed, which can raise the angular position of the active mass on its circular arc-like movement. The effective mass 40 is designed as an inverted, capitalized "U" and thus has a front of active mass 42 and an active mass backside 43 , The active mass front side 42 and the Wirkmassenhinterseite 43 are by the Wirkmassenoberseite 44 as connecting web on the first guide arm 60 and on the second guide arm 62 attached. On the active mass base 45 is the impact structure 50 attached. The impact structure 50 has a front area 52 and a rear area 54 , Advantageously, a force sensor 56 in the front area 52 the impact structure 50 arranged and reports its measured values, for example, cable-guided by the rotary feedthrough of the guide bearing 64 , to a computing unit 170 , At the active mass front 42 (and not to be seen on the Wirkmassenhinterseite 43 ) are brake pads 48 at which the friction rails 114 . 116 the braking device 110 attack as Arretieraggregat when the pendulum 15 after swinging through the test area 106 of the sample warehouse 102 should be stopped. The friction rails 114 . 116 are at support arches 118 . 120 about brackets 124 attached. Between the supporting arches 118 . 120 are leadership strands 126 for mechanical stabilization of the support arches 118 . 120 in abstützender way the distance between them given. The friction rails 114 . 116 offer at the same time guide rails 128 for the active mass 40 of the pendulum 15 , About hydraulic units 130 . 131 can, if desired abruptly, a force on the friction rails 114 . 116 be exercised so that the braking device 110 as Arretieraggregat the active mass 40 in any, z. B. by the arithmetic unit 170 predefinable, position after swinging through the sample storage 102 is held. The battered material sample 188 is from the catch plate 134 collected and can then on the slides 132 . 133 to the conveyor belt 136 move independently, so that the conveyor belt 136 the battered material sample 188 from the inner area of the second frame 30 also promoted.

Another locking unit 70 , the return car, can next to the braking device 110 the active mass 40 of the pendulum 15 in predefinable positions by the arithmetic unit 170 are adjustable, fix. For this purpose, the return car 70 a clutch mechanism 74 in the jetty 47 the active mass 40 intervenes. About a torque machine 76 is the lifting force through the power transmission module 78 on the guide rail 80 applied, the clutch mechanism 74 in the initial position for the notch impact test. At this time, the arithmetic unit raises 170 , if necessary using the calibration sensor 92 in the safety catch 90 , an initial power that with the over the initial energy selector 174 selected energy is adjusted. To interact with the outside of the second frame 30 the user of the pendulum impact tester 10 has the arithmetic unit 170 an ad 172 , For the automated process of material testing with feeding of the material sample 188 from the sample delivery system 190 to the sample warehouse 102 has the arithmetic unit 170 an action button 176 , About the signal lines 178 . 179 the measured values, z. B. the position sensor 66 or the calibration sensor 92 , the computing unit 170 fed. The material sample 188 with her profile cross-section 189 is the sample magazine 192 via the sample delivery system 190 taken and passes through the transfer arm 194 to the sample warehouse 102 , For the most accurate measurement possible and to improve the measurement results of the pendulum impact tester 10 has the sampler 196 a thermostat device 198 that the material sample (s) 188 tempered before conducting an experiment. The arithmetic unit 170 determines the energies on different calculation paths. For calculating a falsifying the measurement result weight error has the fuse latch 90 a calibration sensor 92 ,

How very good the 2 can be seen, the effective mass depends 40 about her guide arms 60 . 62 only on the first frame 20 that made of part racks 22 assembled. Except for those in the fin of the impact structure 50 existing force sensor 56 is the first frame 20 not only free of operating aggregates 70 . 90 . 110 but also designed sensorless. Numerous causes of external influences have either been completely eliminated, for example the friction when triggering the effective mass 40 from the return car 70 by a frictionless lifting of the release latch on the latch web 47 or they are by launching the associated forces and energies into the second frame 30 excluded, at least reduced. Although a pendulum impact tester according to the invention can exert extremely high test energies, such as a nominal test energy of 50 kilojoules or 60 kilojoules, the arithmetic unit measures 170 almost free of interference influence the residual energy or the energy consumption of the material sample 188 ,

Is part of the entire pendulum impact 10 a housing 160 , so special atmospheric situations in the case 160 are generated, for. B. can be carried out with reduced air pressure impact test, resulting in a reduction of the influence of the air on the pendulum 15 contributes. Due to a special design of the guide arms 60 . 62 of the pendulum 15 With phases, the c _w value can also be favorably influenced.

The second frame 30 carries barrier, which prevent an operator or user of the heavy duty pendulum 15 into the danger area around the test site 106 can come around. The material samples 188 are only automatically inserted and deployed from the inner area of the high-load pendulum 15 , The second frame 30 is designed as a technical truss, so that the barrier grids are arranged in the subjects of the truss. The housing 160 may be present in addition, but it does not have to be present.

LIST OF REFERENCE NUMBERS

10

Pendulum impact tester

15

pendulum

20

First frame

22

First subframe, in particular rear part

24

connecting yoke

30

Second frame

32, 33, 34, 35

roller carrier

36

Securing bolt fixture

38

First bracket support bow

40

effective mass

42

Active mass front

43

Active mass back

44

Active mass top

45

Active mass base

47

jack bridge

48

brake pad

50

impact structure

52

Front area

54

The backstage area

56

force sensor

60

Front guide arm

62

Rear guide arm

64

guide bearing

66

position sensor

70

Arretieraggregat Rückholwagen

74

clutch mechanism

76

Rotary engine

78

Power transmission module

80

Guide ring rail

82

Double roller

84

Simple roller

90

Locking unit securing bolt

92

calibration sensor

100

Abutment Bock

102

sample storage

104

High-speed camera

106

Test location

110

Arretieraggregat braking device

114

First friction rail

116

Second friction rail

118

First support arch

120

Second support arch

124

Second bracket supporting bow

126

guide strut

128

guide rail

130, 131

hydraulic unit

132, 133

slide

134

baffle

136

conveyor belt

140

baseplate

150

foundation

152

turnbuckles

160

casing

170

computer unit

172

display

174

Initial energy selector

176

action switch

178

First signal line

179

Second signal line

188

material sample

189

Profile cross section

190

Sample Supply

192

Sample sequence Magazine

194

transfer arm

196

sampler

198

A thermostat device

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 3234611 C2 [0002]
• US 6990845 B2 [0003]
• DE 518969A [0003]
• GB 376726 [0003]
• EP 0027257 A1 [0003]
• DE 9214158 U1 [0004]
• US 4442697 [0005]
• DE 4025135 C1 [0006]
• DE 2642273 C3 [0006]
• DE 2642018 A1 [0006]
• DE 7538946 U [0006]
• DD 261720 A3 [0007]
• DE 10103582 A1 [0007]

Cited non-patent literature

• DIN 51 222 [0008]
• DIN EN 10045 [0008]
• ASTM E 23 standard [0008]
• Standards ASTM E 436-71T [0008]
• API-RP 5L3 [0008]
• DIN EN 10274 [0008]

Claims (13)

Pendulum impactor ( 10 ), in particular for large loads, comprising an active mass ( 40 ) in conjunction with a first frame ( 20 ), whereby the pendulum impact ( 10 ) for testing material properties by localized introduction of consumption energy into a material sample ( 188 ), such. B. in a steel pipe segment, in particular in a material sample ( 188 ), which have a profile cross section ( 189 ), can be used, wherein the consumption energy is presented by mediation of at least one force, wherein the force of the active mass ( 40 ) in the direction of the material sample to be arranged ( 188 ), in particular the profile cross section ( 189 ) of the material sample ( 188 ) is exercisable by attaching to the first frame ( 20 ) the effective mass ( 40 ) with a defined initial energy in an accelerated motion along an arcuate path at least once to a test site ( 106 ) required for receiving the material sample ( 188 ) Is determined, is guided, characterized in that a second frame ( 30 ), which is the first frame ( 20 ), as a holding and installation rack for operating units ( 70 . 74 . 76 . 78 . 80 . 82 . 84 . 90 . 110 . 114 . 116 . 118 . 120 . 124 . 130 . 131 . 133 . 134 . 136 ) of the pendulum impactor ( 10 ) is available. Pendulum impactor ( 10 ) according to claim 1, characterized in that the second frame ( 30 ) independent of the first frame ( 20 ) an experimental energy decoupling between the racks ( 20 . 30 ). Pendulum impactor ( 10 ) according to claim 2, characterized in that the decoupling by a the racks ( 20 . 30 ) connecting support element as a base plate ( 140 ) and / or a concrete foundation ( 150 ) he follows. Pendulum impactor ( 10 ) according to one of the preceding claims, characterized in that of the operating units ( 70 . 74 . 76 . 78 . 80 . 82 . 84 . 90 . 110 . 114 . 116 . 118 . 120 . 124 . 130 . 131 . 133 . 134 . 136 ) at least two locking units ( 70 . 90 . 110 ), which are attached to the second frame ( 30 ) of the pendulum impactor ( 10 ), of which a first arresting unit ( 70 ) a return carriage and a second locking unit ( 110 ) corresponds to a braking device. Pendulum impactor ( 10 ) according to one of the preceding claims, characterized in that the first frame ( 20 ) exclusively for the presentation of a fixing point, in particular in the form of a single or a double A-shaped frame ( 20 . 22 . 24 ), for the effective mass ( 40 ) of a technological pendulum. Pendulum impactor ( 10 ) according to claim 5, characterized in that the active material ( 40 ) in the top of the double A-shaped frame ( 20 . 22 . 24 ) on a guide bearing ( 64 ) is rotatably mounted. Pendulum impactor ( 10 ) according to one of the preceding claims, characterized in that a guide arm ( 60 . 62 ) of the active material ( 40 ) of the pendulum impactor ( 10 ), in particular a two-part guide arm ( 60 . 62 ), with respect to the fixing point by a distribution of the active material ( 40 ) is free of bending moment. Pendulum impactor ( 10 ) according to claim 7, characterized in that the guide arm ( 60 . 62 ) is free of bending moment, if the active material ( 40 ) with a locking unit ( 70 . 90 . 110 ), like the return car ( 70 ) and / or the braking device ( 110 ), non-positively connected. Pendulum impactor ( 10 ) according to one of claims 4 to 8, characterized in that in a state of the pendulum impact ( 10 ) a locking unit ( 70 . 90 . 110 ) in a non-positive holding connection to the active mass ( 40 ) on one side ( 42 . 43 . 44 . 45 ) of the active material ( 40 ) and preferably in a state of a second frictional connection, a second holding connection of the second arresting unit on a second side ( 43 . 42 . 45 . 44 ) of the active material ( 40 ), the first page ( 42 . 43 . 44 . 45 ) is opposite. Pendulum impactor ( 10 ) according to one of claims 4 to 9, characterized in that on the second frame ( 30 ) at least one rail ( 80 ), preferably roller bearing, is attached, the part of the Rückholwagens ( 70 ). Pendulum impactor ( 10 ) according to one of claims 4 to 10, characterized in that the active material ( 40 ) by the return car ( 70 ) is fixed in at least a first position corresponding to a first potential energy and in at least a second position corresponding to a second, in particular higher, potential energy, wherein a difference between the first potential energy and the second potential energy is infinitely adjustable. Pendulum impactor ( 10 ) according to claim 10 or claim 11, characterized. characterized in that the rail ( 80 ) a transport path for the return truck ( 70 ) which is arcuate between the at least one first position and the at least one second position and, in particular, is shorter than a path of the return carriage ( 70 ) attached clutch mechanism ( 74 ) for the active material ( 40 ). Test method for material testing with a pendulum impact tester ( 10 ), in particular according to one of the preceding claims 1 to 11, characterized in that an active mass ( 40 ) on a first frame ( 20 ) in a material test without influence of foreign substances against a material sample ( 188 ) and the energy input into the material sample ( 188 ) is carried out without foreign influence, all operating units ( 70 . 74 . 76 . 78 . 80 . 82 . 84 . 90 . 92 . 100 . 102 . 104 . 110 . 114 . 116 . 118 . 120 . 124 . 126 . 128 . 130 . 131 . 132 . 133 . 134 . 136 . 160 . 170 . 172 . 174 . 176 . 190 . 192 . 194 . 196 . 198 ) from the second frame ( 30 ) or a supporting structure ( 140 . 150 . 152 ) are worn.

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