LTM电子动态疲劳试验机

Electrodynamic testing machines are used to determine material and component fatigue-strength in the fatigue life and fatigue limit ranges.

The LTM’s wide speed range allows it to be used for both dynamic fatigue tests and quasi-static tests. The oil-free drive, combined with ease of installation, makes the electrodynamic testing machine ideal for use in biomedical engineering and electronics, as well as for research and training. Typical examples include tests on hip-joint and knee replacements and dental implants. Other applications are tests on standard plastics and composites specimens, as well as aluminum and plastics CT and SEB specimens. The electrodynamic testing machine is available with loads of 1, 2, 3, 5 and 10 kN.

The Electromagnetic Drive 

The LTM linear motor testing machine is based on a patented electrodynamic drive system from ZwickRoell.

The drive was specifically designed for the relevant speed range

  • High positioning accuracy
  • Optimal control quality
  • High frequency rate 
  • Reliable test results

Key Advantages and Features

Description

The LTM is an electrodynamic testing machine with a drive based on linear motor technology. ZwickRoell's newly developed patented drive concept enables the LTM to be used for both dynamic and static materials and components testing. The low moved mass of the drive provides ideal conditions for performing fatigue tests with tensile, compression, and flexural loading.

The LTM is used in industries where oil-free and low-noise drive technology are preferred, for example, in the medical industry for standard-compliant testing of hip joint, knee, or dental implants.

Other typical application examples include fatigue and durability tests on standard specimens made of plastics, fiber composites and metals.

For components testing, the LTM is equipped with a T-slotted plate that can be adapted to components, and test fixtures quickly and easily as standard.

Intuitive operation via testXpert R and testXpert III software makes the LTM a genuine all-rounder for industrial purposes as well as for research and teaching at university level.

Advantages

  • High dynamic performance due to low moving mass
  • Wide speed-range enables dynamic as well as quasi-static tests
  • Low operating and maintenance costs with oil-free drive technology without additional supply feeds
  • Motor-driven traverse adjustment for convenient operation
  • safe setup mode as per EN 60204-1 via speed reduction to 10 mm/s
  • Simple manual crosshead locking via hand lever with electrical monitoring and LED status indicator
  • Long piston-stroke (60 mm) enables wide variety of applications
  • Operator-friendly testXpert R testing software with preset controller settings and availability of free controller definition for dynamic testing requirements
  • Intelligent testing software testXpert III featuring intuitive operation for static testing requirements.
  • Flexible use of specimen grips and fixtures over the entire dynamic product range
  • The electromagnetic drive was designed specifically for the speed range relevant to testing technology and features exceptionally quiet operation, optimum control quality and extremely high positioning accuracy
  • The travel measuring system is coaxial to the test axis and mounted near the specimen in the piston rod, enabling high positioning repeatability and precise piston travel measurement

试验频率为100Hz,保证了较短的测试时间,得到高测试量。

线性马达不要求额外的设备,例如气动装置,冷却水,或油。这减少了服务和安装费用。

动态试验的软件是testXpert® R,静态试验的软件是testXpert® II。这个软件为直观和定制化,满足试验要求。

无磨损的部件保证了免维护的操作。

The Displacement Measuring System

During the design stage, particular attention was paid to the positioning of the displacement measuring system—close to the specimen and in the center of the test axis.

The displacement measurement is coaxial and mounted near the specimen in the piston rod.

  • By avoiding displacement measurement errors, exceptional positioning and repetition accuracy can be achieved.

技术概览

LTM 1 / 1 HR

Type

LTM 1           Standard

LTM 1           + 400 mm[1]

LTM 1 HR     Standard

LTM 1 HR     + 400 mm[1]

Item No.

1045232

1053558

3006625

3006626

Fmax, dynamic

± 1000

± 1000

± 1000

± 1000

N

Fmax, static continuous

± 910

± 910

± 910

± 910

N

Piston stroke

60

60

60

60

mm

Positioning and repeat accuracy

± 2

± 2

± 2

± 2

μm

Speed range

1.5

1.5

2

2

m/s

Maximum frequency[2]

100

100

120

120

Hz

Noise level at 1 meter distance, max.[3]

< 61

< 61

< 61

< 61

dB(A)

Noise level at 1 meter distance, typically[3]

< 45

< 45

< 45

< 45

dB(A)

Load frame

Overall height of testing machine, max. (A)[4]

1455

1855

1455

1855

mm

Overall height of testing machine with Base option, max. (E)[4]

2104

2504

2104

2504

mm

Overall height of test frame, max. (F)

906

1306

906

1306

mm

Overall height of test frame with support legs, max. (B)

945

1345

945

1345

mm

Overall width of load frame

665

665

665

665

mm

Total depth of load frame

525

525

525

525

mm

Column diameter

65

65

65

65

mm

Frame stiffness at 500 mm crosshead separation

25

40

25

40

kN/mm

Height, base (G)

692

692

692

692

mm

Width, base

800

800

800

800

mm

Depth, base

700

700

700

700

mm

Total weight[5]

210

270

210

270

kg

Working area

Working area width

460

460

460

460

mm

Working area height w/o load cell, max. (D)[4] [6]

640

1040

640

1040

mm

Working area height with load cell, max. (C)[4] [6]

550

950

550

950

mm

Top crosshead adjustment

Motorized

Top crosshead clamping

Manual

Crosshead clamping electrically monitored

Yes, with signal indicator

  1. Extended load frame (required for use with a temperature chamber)
  1. Depending on load ratio (r-ratio) and test amplitude
  1. Depending on output required, environment, testing arrangement, testing type, frequency and specimen type. Measured at 1m distance, free field, analog to DIN EN ISO 11205
  1. Highest crosshead position
  1. Testing machine only, w/o electrical cabinet, accessories and options
  1. Median piston position

LTM 2 / 2 HR

Type

LTM 2           Standard

LTM 2           + 400 mm[1]

LTM 2 HR     Standard

LTM 2 HR     + 400 mm[1]

Item No.

1045234

1053560

3006627

3006628

Fmax, dynamic

± 2000

± 2000

± 2000

± 2000

N

Fmax, static continuous

± 1400

± 1400

± 1400

± 1400

N

Piston stroke

60

60

60

60

mm

Positioning and repeat accuracy

± 2

± 2

± 2

±2

μm

Speed range

1.5

1.5

2

2

m/s

Maximum frequency[2]

100

100

120

120

Hz

Noise level at 1 meter distance, max.[3]

< 61

< 61

< 61

< 61

dB(A)

Noise level at 1 meter distance, typically[3]

< 45

< 45

< 45

< 45

dB(A)

Load frame

Overall height of testing machine, max. (A)[4]

1455

1855

1455

1855

mm

Overall height of testing machine with Base option, max. (E)[4]

2104

2504

2104

2504

mm

Overall height of test frame, max. (F)

906

1306

906

1306

mm

Overall height of test frame with support legs, max. (B)

945

1345

945

1345

mm

Overall width of load frame

665

665

665

665

mm

Total depth of load frame

525

525

525

525

mm

Column diameter

65

65

65

65

mm

Frame stiffness at 500 mm crosshead separation

25

40

25

40

kN/mm

Height, base (G)

692

692

692

692

mm

Width, base

800

800

800

800

mm

Depth, base

700

700

700

700

mm

Total weight[5]

210

270

210

270

kg

Working area

Working area width

460

460

460

460

mm

Working area height w/o load cell, max. (D)[4] [6]

640

1040

640

1040

mm

Working area height with load cell, max. (C)[4] [6]

550

950

550

950

mm

Top crosshead adjustment

Motorized

Top crosshead clamping

Manual

Crosshead clamping electrically monitored

Yes, with signal indicator

  1. Extended load frame (required for use with a temperature chamber)
  1. Depending on load ratio (r-ratio) and test amplitude
  1. Depending on output required, environment, testing arrangement, testing type, frequency and specimen type. Measured at 1m distance, free field, analog to DIN EN ISO 11205
  1. Highest crosshead position
  1. Testing machine only, w/o electrical cabinet, accessories and options
  1. Median piston position

LTM 3 / 3 HR

Type

LTM 3           Standard

LTM 3             + 170 mm[1]

LTM 3 HR    Standard

LTM 3 HR     + 170 mm[1]

Item No.

1045235

1053564

1056879

1058953

Fmax, dynamic

± 3000

± 3000

± 3000

± 3000

N

Fmax, static continuous

± 2300

± 2300

± 2300

± 2300

N

Piston stroke

60

60

60

60

mm

Positioning and repeat accuracy

± 2

± 2

± 2

± 2

μm

Speed range

1.0

1.0

2

2

m/s

Maximum frequency[2]

100

100

120

120

Hz

Noise level at 1 meter distance, max.[3]

< 63

< 63

< 63

< 63

dB(A)

Noise level at 1 meter distance, typically[3]

< 46

< 46

< 46

< 46

dB(A)

Load frame

Overall height of testing machine, max. (A)[4]

1765

1935

1765

1935

mm

Overall height of testing machine with Base option, max. (E)[4]

2414

2584

2414

2584

mm

Overall height of test frame, max. (F)

945

1345

945

1345

mm

Overall height of test frame with support legs, max. (B)

986

1386

986

1386

mm

Overall width of load frame

665

665

665

665

mm

Total depth of load frame

525

525

525

525

mm

Column diameter

65

65

65

65

mm

Frame stiffness at 500 mm crosshead separation

40

40

40

40

kN/mm

Base height (G)

692

692

692

692

mm

Width, base

800

800

800

800

mm

Depth, base

700

700

700

700

mm

Total weight[5]

305

310

305

310

kg

Working area

Working area width

460

460

460

460

mm

Working area height w/o load cell, max. (D)[4] [6]

870

1040

870

1040

mm

Working area height w/o load cell, max. (C)[4] [6]

550

950

550

950

mm

Top crosshead adjustment

Motorized

Top crosshead clamping

Manual

Crosshead clamping electrically monitored

Yes, with signal indicator

  1. Extended load frame (required for use with a temperature chamber)
  1. Depending on load ratio (r-ratio) and test amplitude
  1. Depending on output required, environment, testing arrangement, testing type, frequency and specimen type. Measured at 1m distance, free field, analog to DIN EN ISO 11205
  1. Highest crosshead position
  1. Testing machine only, w/o electrical cabinet, accessories and options
  1. Median piston position

LTM 5/10 

型号

LTM 5

LTM 5           + 250 mm[1]

LTM 10

LTM 10           + 250 mm[2]

订货号

1008107

3001848

1008108

3001847

Fmax, 动态

±5

±5

±10

±10

kN

Fmax, 静态连续

±3.5

±3.5

±7

kN

活塞行程

60

60

60

60

mm

定位重复精度

±2

±2

±2

±2

μm

速度范围

1

1

1

1

mm/min

 

1.5

1.5

1.0

1.0

m/s

最高频率[3]

100

100

100

100

Hz

机架

横梁定位在1000mm时的机架刚度

300

横梁定位在1000mm时的机架刚度

300

300

300

300

kN/mm

试验机的最大高度(A)[4]

2510

2760

2715

2965

mm

试验机机架的最大高度(B)

1980

2230

1980

2230

mm

整体宽度

860

860

860

860

mm

整体深度

850

850

850

850

mm

试验工作台高度(C)

720

720

720

720

mm

立柱直径

65

65

65

65

mm

测试区域的最大高度(D)[4]

1106

1356

1106

1356

mm

整体重量[5]

941

966

1065

kg

工作区域

工作区域宽度

460

460

460

460

mm

工作区域的最大宽度,不含力传感器(E)[4] [6]

920

1170

920

1170

mm

工作区域的最大高度,含力传感器(F)[4] [6]

781

1031

781

1031

mm

上横梁调节

机动

上横梁夹持

手动

横梁固定电子监控

是,含信号指示器

Fmax, 静态持续

±7

整体重量[7]

1040

横梁夹持电子监控

是,含信号指示器

  1. 扩展机架(需要使用环境试验箱时)
  1. 扩展机架(使用环境试验箱时要求)
  1. 取决于载荷比(r-比率)和试验振幅
  1. 横梁的最高位置
  1. 仅试验机,不含电器柜,附件和其它选项
  1. 活塞至中间位置
  1. 只有试验机,不含电器柜,附件和其它选项

设计

Layout elektro-dynamische Prüfmaschine LTM

LTM 1/2/3 design

testControl II测量和控制器

testControl II测量和控制器

控制频率

10 kHz

数据采集

10 kHz, 24 比特,算数上的

插槽

5 x 模块总线

PC接口

GigaBit 以太网

集成的安全方案

- 双通道配置实现最高安全性

 

- 联锁安全门的接口

 

- 紧急停止按钮

配有显示屏的遥控控制器

设置测试模式

 

- 紧急停止按钮

 

设置和测试模式可通过开关转换

尺寸

高度

750

mm

宽度

600

mm

深度

600

mm

重量(近似值)

102

kg

连接LTM和testControl II的电缆的长度

500

mm

防护等级

IP 54

通过创新的试验技术提高医疗产品的安全性可可靠度

疲劳试验是研发持久、安全、可靠的植入物的必不可少的环节。Prototypes undergo extensive testing before entering the validation process; Komet Medical, the surgical division of Gebr.Brasseler based in Lemgo, Germany, uses a ZwickRoell testing machine with linear drive for these tests.
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