увод
ИСО (Међународна организација за стандардизацију) је глобални савез националних тела за стандардизацију (Тела чланица ИСО). Развој међународних стандарда се обично спроводи преко ИСО техничких комитета. Свака институција чланица заинтересована за предмет за који је основан технички комитет има право да буде заступљена у тој комисији. Међународне владине и невладине организације које су у вези са ИСО такође су укључене у овај посао. ИСО блиско сарађује са Међународном електротехничком комисијом (ИЕЦ) о свим питањима електричне стандардизације.

Међународни стандарди се израђују у складу са правилима датим у ч 3 ИСО/ИЕЦ директиве.

Нацрт међународног стандарда који је усвојио Технички комитет биће прослеђен телима чланицама на гласање. Објављивање као међународни стандард захтева одобрење најмање од стране 75% институција чланица.

Please note that some elements of this part of ISO 6603 May be the subject of a patent right. ИСО није одговоран за идентификацију било ког или свих таквих патената.

Међународни стандард ИСО 6603-1 was developed by the Technical Committee ISO/TC61, Пластика, Subcommittee SC 2, Mechanical Properties.

ИСО 6603-1-2000 “Пластика – Determination of puncture impact behaviour of rigid plastics – Парт 1: Non-instrumental impact testing”

The second edition cancels and replaces the technically revised first edition (ИСО 6603-1:1985).

ИСО 6603 састоји се од следећих делова, under the general heading Plastics – Determination of puncture impact behaviour of rigid plastics:

– Парт 1: Non-instrumental impact testing

– Парт 2: Instrumented impact testing

Appendix A of this part of ISO 6603 is for information purposes only.

1 Домет
This standard specifies a method for determining, under specified conditions, the puncture impact properties of rigid plastics in the form of flat specimens, such as disks or squares. The sample can be molded directly, cut from the sheet or removed from the finished product. Different types of samples and test conditions are defined.

ИСО 6603-1-2000 “Пластика – Determination of puncture impact behaviour of rigid plastics – Парт 1: Non-instrumental impact testing”

These drop dart methods are used to study the behavior of plastic films or molds under the impact of a firing pin perpendicular to the specimen plane.

Овај део ИСО-а 6603 can be used if it is sufficient to characterize the impact behavior of plastics by an impact failure energy threshold based on many samples. If a force-deflection or force-time plot recorded at a nominal constant firing pin speed is necessary to characterize impact behavior in detail, ИСО 6603-2 is used.

These test methods are suitable for specimens with thicknesses between 1 mm and 4 мм.

Note For thicknesses less than 1 мм, ИСО 7765 is recommended. If the equipment is suitable, it is possible to test thicknesses greater than 4 мм, but this test falls outside the scope of ISO 6603-1 и ИСО 6603-2.

These methods are suitable for the following types of materials:

Rigid thermoplastic molding and extrusion materials, including filled, unfilled and reinforced compounds and sheets;

– Rigid thermosetting molding and extrusion materials, including filling and reinforcing compounds, sheets and laminates;

ИСО 6603-1-2000 “Пластика – Determination of puncture impact behaviour of rigid plastics – Парт 1: Non-instrumental impact testing”

Fiber-reinforced thermoset and thermoplastic composites, including unidirectional or non-unidirectional reinforcement materials, such as MATS, woven fabrics, woven roving, cut strands, combined and mixed reinforcement materials, roving, milled fibers and sheets made from pre-impregnated materials (prepregs).

These methods are also applicable to samples molded or machined from finished products, laminates and extruded or cast plates.

The test results are comparable only when the preparation conditions, size and surface of the sample and the test conditions are the same. Нарочито, the results determined on specimens of different thicknesses cannot be compared with each other (see Appendix E: – to ISO 6603-2). A comprehensive assessment of the impact stress response requires measurement of the impact velocity and temperature of different material variables, such as crystallinity and moisture content.

The impact behavior of the finished product cannot be predicted directly from this test, but samples can be taken from the finished product (see above) for testing by these methods.

Test data developed through these methods should not be used in design calculations. Међутим, information on the typical behaviour of the material can be obtained by testing at different temperatures and impact velocities (see Annex D of ISO 6603-2: -), varying thickness (see Annex E of ISO 6603-2: -) and testing samples prepared under different conditions.

Овај део ИСО-а 6603 describes two statistical test methods:

– Метод А: Staircase Method (Individual) (preferred)

In this method, a uniform energy increment is used during the test. After testing each sample, the energy is reduced or increased by uniform increments, depending on the observations (pass or fail) of the previous test.

ИСО 6603-1-2000 “Пластика – Determination of puncture impact behaviour of rigid plastics – Парт 1: Non-instrumental impact testing”

– Метода Б: Group method (Опционо)

In this method, a continuous group of at least ten samples is tested. The impact failure energy is calculated statistically.

2 Normative references
The following normative documents contain provisions that, by reference herein, constitute the provisions of this part of ISO 6603. За датиране референце, any subsequent revisions or amendments to these publications will not apply. Међутим, 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. For undated references, a new version of the standard-setting document referred to applies. ISO and IEC members maintain a register of currently valid international standards.

ИСО 291:1997, Пластика. Adjust and test the standard atmosphere.

ИСО 293:1986, Пластика. Compression forming sample of thermoplastic material.

ИСО 294-3:1996, Пластика. Injection molding of thermoplastic material samples. Парт 3: Small board.

ИСО 295:1991, Пластика. Compression molding of thermosetting material samples.

ИСО 1268:19741), Пластика – Preparation of glass fiber reinforced, resin bonded, low pressure laminates or panels for test purposes.

ИСО 2818:1994, Пластика. The sample was prepared by machining.

ИСО 7765-1:1988, plastic films and sheets. The impact resistance was determined by the free falling dart method. Парт 1: Staircase method.

ИСО 7765-2:1994, plastic films and sheets. The impact resistance was determined by the free fall dart method. Парт 2: Instrumental puncture test.

ИСО 6603-1-2000 “Пластика – Determination of puncture impact behaviour of rigid plastics – Парт 1: Non-instrumental impact testing”

3 Terms and definitions
For the purposes of this part of ISO 6603, the following terms and definitions apply:

3.1 Преглед

3.1.1 Failure

Any visible breakage of the specimen surface

3.2 Failure standard terms

3.2.1 Crack

Any cracks that are visible to the naked eye and cannot penetrate the entire thickness of the material

See: Figure 1

3.2.2 Broken

Any cracks throughout the entire thickness of the material

See: Figure 2

3.2.3 Penetration

Failure of the firing pin to penetrate the entire thickness of the specimen

See: Figure 3 б)

3.2.4 Grinding

Break the sample into two or more pieces

See: Figure 3 а)

3.3 Impact failure items
3.3.150 % impact failure energy E50

The energy that causes 50% of the sample to fail, as defined in 3.1.1

3.3.250 % impact failure mass M50

The mass that causes 50% of the sample to fail at a given fall height, as defined in 3.1.1

3.3.350 % impact failure mass H50

50% impact failure height H50 uses the height at which a given falling mass causes 50% sample failure, as defined in 3.1.1

Figure 1 – Specimen sections damaged by “cracks” [б) and c) after bending by hand

ИСО 6603-1-2000 “Пластика – Determination of puncture impact behaviour of rigid plastics – Парт 1: Non-instrumental impact testing”

Figure 2 – Slices passed through the specimen are damaged by “breakage” [б) and c) after bending by hand

Figure 3 – Examples of “broken” failures [а) и “penetrated” [б)

а)

б)

Јаван је само одељак са стандардним информацијама. Да бисте видели цео садржај, морате купити стандард преко званичних канала.