DLG e.V. - Test: Cow mattress Durasoft

Cow mattress Durasoft Deformability/Elasticity, Permanent Tread Load

Assessment – Brief Summary

The GEA cow mattress Durasoft tested here, an elastic floor covering for the resting area in cubicle houses, was investigated with regard to durability and comfort properties on test stands in the DLG Focus Test. The deformability and elasticity of the cubicle mat were measured and a permanent tread load was applied. The deformability and elasticity in new condition and following permanent tread load were significantly better than standard.

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Table 1: Overview of results

Test characteristic Test result Evaluation*
Deformability and elasticity*
– in new condition 26,9 mm + +
– following endurance test 27,9 mm + +
Permanent tread load*
no lasting deformation + +
no noticeable wear +

*    Evaluation range: ++ / + /◯ / – / –– (◯ = standard, k.B. = not evaluated)

Product

Cow mattress Durasoft

Description and Technical Data

The GEA cow mattress Durasoft tested here is an elastic floor covering

  • for resting area of high cubicles in cubicle houses
  • thickness approx. 43 mm.
  • Top cover: black rubber mat with fabric inlay, upper side with silkscreen structure, underside without structure; thickness approx. 3 mm.
  • Mattress underlay made of approx. 40 mm thick PU foam sheet
  • Laid as sheeting.

The Method

Deformability and elasticity

The deformability is measured in new condition and following permanent tread load using ball penetration tests with a calotte (r = 120 mm) and a penetration force of 2,000 N (corresponding to approx. 200 kg).

Permanent tread load

The permanent tread load is measured on a test stand with a round steel foot in the standard test programme with 100,000 alternating loads at 10,000 N (corresponding to approx. 1,000 kg). The steel foot is adapted to the natural conditions as an “artificial cow foot”. The foot has a diameter of 105 mm and therefore a contact area of 75 cm²; the carrying edge of the hoof is simulated by a 5 mm wide ring on the periphery of the sole that projects 1 mm above the rest of the surface.

The Test Results in Detail

Deformability and elasticity

In the ball penetration tests in new condition with a calotte (r = 120 mm), penetration depth was 26.9 mm. The resulting calculated bearing pressure of 9.8 N/cm² indicates a small load on the carpal joints when lying down and getting up.
Elasticity was measured following a permanent tread load exerted by a steel foot (contact area: 75 cm²) with 100,000 alternating loads at 10,000 N. Following the endurance test, the penetration depth of the calotte increased from 26.9 mm to 27.9 mm. The bearing pressure decreased from 9.8 N/cm² to 9.5 N/cm² (see Fig. 2). This means that deformability and elasticity slightly increase. Evaluation see Table 1.

Figure 2: Deformability as a function of bearing pressure

Permanent tread load

Wear on the surface of the mat was observed following exposure to permanent tread load on a test stand with 100,000 alternating loads at 10,000 N. No lasting deformation and no noticeable wear was observed. Evaluation see Table 1.

Figure 3: Permanent tread load

Figure 4: Measuring the deformability

Summary

Based on test-stand investigations, the criteria tested in this DLG Approved Test evaluate the comfort and durability properties of the GEA cow mattress Durasoft for use in the resting area of high cubicles in cubicle houses. The tested GEA cow mattress Durasoft met the requirements of the Testing Framework with respect to the investigated criteria.

DLG Test Center Technology and Farm Inputs

DLG e.V.
Max-Eyth-Weg 1
64823 Groß-Umstadt
Germany
Tel.: +49(0)69 24 788-611
tech(at)DLG.org

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DLG-APPROVED Single value-determining criteria
A quality mark “DLG-APPROVED for single value-determining criteria” is awarded to agricultural products which successfully passed a smaller-scope DLG usability test according to independent and recognized evaluation criteria. The test intends to highlight special innovations and key criteria of the test item. The test can focus on criteria from the DLG testing framework for full tests or on other individual features or qualitative criteria. The minimum requirements, the test conditions and procedures as well as the evaluation guidelines of the test results are determined in consultation with a DLG expert group. They comply with the generally recognized technology rules as well as with scientific and agricultural knowledge and requirements. The successful test concludes with the publishing of a test report and the awarding of a quality mark which is valid for five years following the award date.

The DLG Appoved Test “Deformability/Elasticity, Permanent Tread Load” includes technical measurements on test stands of the DLG Test Center. The deformability and elasticity were measured and a permanent tread load was applied. The test was based on the DLG Testing Framework for elastic stable flooring, as of April 2010. Other criteria were not investigated.

Manufacturer and Applicant

GEA Farm Technologies,
Vestaweg 5,
NL 8938 AV Leeuwarden

Contact:
Telephone: +31 58 284 33 00
Fax: +31 58 284 33 01
jan.lycklama(at)gea.com
www.gea.com

Test execution

DLG e.V.,
Test Center for
Technology and Farm Inputs,
Max-Eyth-Weg 1,
64823 Groß-Umstadt,
Germany

DLG Testing Framework
DLG Approved Test
“Elastic Stable Flooring”
(as at 04/2010)

Field
Indoor operations

Project manager
Dipl.-Ing. Susanne Gäckler

Test engineer(s)
Dr. Harald Reubold  *

* Reporting engineer