panimula
ISO (International Organization para sa Standardisasyon) ay isang pandaigdigang alyansa ng mga pambansang pamantayan katawan (Mga katawan ng miyembro ng ISO). Ang pagbuo ng mga internasyonal na pamantayan ay karaniwang isinasagawa sa pamamagitan ng ISO teknikal na komite. Ang bawat institusyon ng miyembro na interesado sa isang paksa kung saan itinatag ang isang teknikal na komite ay may karapatang kumatawan sa komiteng iyon. Ang mga internasyonal na organisasyon ng pamahalaan at di pamahalaan na nakikipag ugnayan sa ISO ay kasangkot din sa gawaing ito. ISO ay gumagana nang malapit sa International Electrotechnical Commission (IEC) sa lahat ng bagay ng electrical standardization.

International pamantayan ay drafted alinsunod sa mga patakaran na ibinigay sa Bahagi 3 ng Direktiba ng ISO / IEC.

Ang draft international standard na pinagtibay ng Technical Committee ay ipapakalat sa mga miyembro ng mga katawan para sa pagboto. Ang paglalathala bilang isang internasyonal na pamantayan ay nangangailangan ng pag apruba ng hindi bababa sa 75% ng mga miyembrong institusyon.

Please note that some elements of this part of ISO 6603 May be the subject of a patent right. Ang ISO ay hindi mananagot para sa pagtukoy ng anuman o lahat ng naturang patente.

The international standard ISO 6603-2 was developed by the Technical Committee ISO/TC 61, Mga plastik, Subcommittee SC 2, Mechanical Properties.

ISO 6603-2-2000 “Mga plastik – Pagpapasiya ng puncture epekto pag uugali ng matigas na plastik – Bahagi 2: Instrumento epekto test”

Ang ikalawang edisyon ay kinakansela at pinalitan ang unang edisyon (ISO 6603-2:1989), na kung saan ay teknikal na binago.

ISO 6603 binubuo ng mga sumusunod na bahagi, under the general heading Plastics – Pagpapasiya ng puncture epekto pag uugali ng matigas na plastik:

– Bahagi 1: Pagsusuri ng di instrumental na epekto

– Bahagi 2: Instrumented impact testing

Appendices A to E of this part of ISO 6603 are for information purposes only.

1 Saklaw
Ang bahaging ito ng ISO 6603 specifies a test method for determining the puncture impact properties of rigid plastics in the form of flat specimens using instruments that measure force and deflection. This applies if a force-deflection or force-time plot recorded at a nominal constant firing pin speed is necessary to characterize impact behavior in detail.

ISO 6603-1 can be used if ISO 6603-1 is sufficient to characterize the impact behavior of plastics by an impact failure energy threshold based on many samples.

The purpose of this part of ISO 6603 is not to explain the mechanisms that occur at each particular point on the force-deflection chart. These explanations are the task of scientific research.

Note also Article 1 of ISO 6603-1:2000.

ISO 6603-2-2000 “Mga plastik – Pagpapasiya ng puncture epekto pag uugali ng matigas na plastik – Bahagi 2: Instrumento epekto test”

2 Mga reperensyang normatibo
The following normative documents contain provisions that, by reference herein, constitute the provisions of this part of ISO 6603. Para sa mga petsang sanggunian, any subsequent revisions or amendments to these publications will not apply. Gayunpaman, Parties to agreements based on this part of ISO 6603 are encouraged to investigate the possibility of applying new versions of the following normative documents. Para sa mga walang petsang sanggunian, a new version of the standard-setting document referred to applies. ISO and IEC members maintain a register of currently valid international standards.

ISO 2602:1980, Statistical interpretation of test results – mean estimation – confidence intervals.

ISO 6603-1:2000, Mga plastik. Determination of puncture impact behavior of rigid plastics. Bahagi 1: Non-instrumental impact tests.

3 Mga tuntunin at kahulugan
For this part of ISO 6603, Ang mga sumusunod na termino at kahulugan ay nalalapat.

3.1 Impact velocity

The speed of the firing pin relative to the support at the time of impact

Tala 1: The impact velocity is expressed in meters per second (m/s).

3.2 Force F

The force exerted by the firing pin on the specimen in the direction of impact

Tala 1: Force is expressed in Newtons (N).

3.3 Deflection l

The relative displacement between the firing pin and the specimen holder begins with the first contact between the firing pin and the specimen

Tala 1: Deflection is expressed in millimeters (mm).

3.4 Energy

The energy expended to deform and penetrate the specimen up to the deflection L

ISO 6603-2-2000 “Mga plastik – Pagpapasiya ng puncture epekto pag uugali ng matigas na plastik – Bahagi 2: Instrumento epekto test”

Tala 1: Energy is expressed in joules (J).

Tala 2: The energy is measured as the integral of the force-deflection curve from the point of impact to the deflection l.

3.5 Maximum Power FM

The test process occurs with maximum force

Tala 1: Maximum force is expressed in Newtons (N).

3.6 Deflection lm at maximum force

Deflection at maximum power FM

Tala 1: Deflection under maximum force is expressed in millimetres (mm).

3.7 Energy to maximum power

The energy expended at maximum force reaches deflection lM

Tala 1: The most powerful energy is expressed in joules (J).

3.8 Puncture deflection lP

The force is reduced to half the deflection of the maximum force F M

See Figures 1-4 at Tala 3.9.

Tala 1: Puncture deflection is expressed in millimeters (mm).

ISO 6603-2-2000 “Mga plastik – Pagpapasiya ng puncture epekto pag uugali ng matigas na plastik – Bahagi 2: Instrumento epekto test”

3.9 Puncture Energy

The energy consumed until the puncture deflects lP

See Figures 1-4 and note 2.

Tala 1: The puncture energy is expressed in joules (J).

Tala 2: When testing hard materials, a probe mounted at a distance from the impact tip can record the friction force acting between the cylindrical part of the firing needle and the piercing material. The corresponding friction energy should not be included in the piercing energy, so the piercing energy is limited to that deflection, where the force drops to half of the maximum force FM.

3.10 Impact Failure

The mechanical properties of the material to be measured may be of one of the following types (tingnan sa tala) :

ISO 6603-2-2000 “Mga plastik – Pagpapasiya ng puncture epekto pag uugali ng matigas na plastik – Bahagi 2: Instrumento epekto test”
Tala 1: A comparison of Figures 2 at 3 shows that puncture deflection lP and puncture energy EP are the same for failure types YS and YU. As shown in Figure 4, in the case of failure type YU, the deflection and energy have the same values at the maximum and at the puncture. For complex behaviour, see annex A.

Larawan 1 – An example of a force-deflection diagram of the typical appearance of a specimen after yielding (zero slope at maximum force) followed by deep drawing and testing (using lubrication)

Larawan 2 – Example force-deflection diagram of failure by yield (zero slope at maximum force), followed by steady crack growth, and typical appearance of the specimen after testing (using lubrication)

Larawan 3 – Example force-deflection diagram of failure through yield (zero slope at maximum force) and the typical appearance (lubrication) of the specimen after testing

Note the natural vibration of the force detector can be seen after the unstable cracking (firing pin and weighing sensor).

Larawan 4 – Example force-deflection diagram of unyielding failure followed by unstable crack propagation and typical appearance of the specimen after testing (using lubrication)

ISO 6603-2-2000 “Mga plastik – Pagpapasiya ng puncture epekto pag uugali ng matigas na plastik – Bahagi 2: Instrumento epekto test”

Ang standard information section lamang ang pampubliko. Upang makita ang buong nilalaman, kailangan mong bilhin ang pamantayan sa pamamagitan ng mga opisyal na channel.