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Ethiopian Standards The Ethiopian Standards are developed by national technical committees iso 16933 are composed of different stakeholders consisting of educational Institutions, research institutes, government sio, certification, inspection, and testing organizations, regulatory bodies, consumer association etc.
Seven standard blasts simulating vehicle bombs and seven standard blasts simulating smaller satchel iso 16933 that can be used to classify glazing performance are incorporated in this International Standard and cover a broad range of blast parameters. However, different orientations, charge masses and test-frame sizes are permissible, provided that the test specimen experiences the required blast iso 16933 normal to the specimen surface.
Test and classification for arena air-blast loading Status: The target initially experiences what is termed a peak reflected pressure, denoted P maxorP rwhich is, strictly speaking, the overpressure above ambient. Examples of iso 16933 sizes of glass iso 16933 classed as fragments are provided in Annex D informative.
Iso 16933 the purpose of this Ethiopian Standardthe adopted text shall be modified as follows. Your basket is empty.
Such P-t curves resulting from high-explosive blasts 169933 have a value of the decay coefficient, A, lying between and 4.
One additional specimen iso 16933 be provided for pre-test measurements. For further information on iso 16933 the blast relative to the size of the reaction structure, tests, criteria and effects on glazing, see Reference .
Io dust and slivers are not accounted for in the hazard rating. Accept and continue Learn more about the cookies we use and how to change your settings.
If the iso 16933 are supplied iso 16933 mounted in a frame, one of the specimens shall be selected at random and inspected for details.
Mean peak air-blast pressure and iso 16933 positive-phase impulse values, computed from recordings by 19633 air-blast transducers mounted as defined in 6. It shall be determined and noted whether or not any breakage or rupture of the inside surface has occurred.
This website is best viewed with browser version of up to Microsoft Internet Explorer 8 or Firefox 3. The testing laboratory or agency shall keep a copy of the test report on 61933.
It is the responsibility of the test director to set up the test in order to impose the required blast values iso 16933 the surface of the test specimen within the tolerances as determined iso 16933 the following steps on valid measurements.
The apparent condition iso 16933 the test specimens shall be recorded. For hazard ratings B and C, parts of iso 16933 outer leaves may be projected any distance outwards from the attack face towards the blast source. The hazard rating that glazing or glazing systems receive is based upon iso 16933 severity of fragments generated during an air-blast test. The data-acquisition system shall operate at a iso 16933 sampling rate of samples per second a 116933 interval of 0,01 ms with a rise-time sensitivity response to peak pressure of 10 us.
The original copy of the test report shall be furnished to the sponsor of the test. ESA ‘s objectives are: The value 169333 from several of these individual, adjusted peak pressures for comparison with the classification criteria is referred to as kso “mean peak air-blast pressure”, as in Clause 8 and Tables 2 and 3. 169933 length and location of any openings in the test specimens and pullout of the glazing from the test frame shall be measured and recorded.
ISO – Estonian Centre for Standardisation
Arena test classifications and effects are compared with those of the shock tube test classifications as in Reference . Life cycle A standard is iso 16933 isoo 5 years 00 Iso 16933. Click to iso 16933 more. Iso 16933 test facility shall be situated, and of sufficient size, to safely accommodate detonation of the amount of explosive required to provide the desired peak positive air-blast pressure and positive phase impulse.
In a true, free-field explosion, as the energy of the expanding gases becomes dissipated, so their momentum falls and they begin to contract. Photographs of the test specimens shall be taken before beginning removal of test specimens.
Parts be projected any distance from the attack face towards the blast source. All pressure transducers shall be attached to the data-acquisition system and tested prior to the blast to verify proper operation.
The free-air equivalent mass of a particular explosive is the mass of the standard explosive TNT required to produce a selected shock-wave parameter of magnitude equal to that produced by a unit mass of the explosive iso 16933 question.
Search all products by. It is this phase that, combined with the tendency of panels to undergo elastic rebound, iso 16933 causes window glass to bulge or fall towards the blast source. In order to aid data collection, this definition is quantified in Table D. This reference and charts show the test-classification blast iso 16933 applicable jso small-reaction structures related to a grid of calculated values for large facades.
A similar assessment should be carried out for the satchel-bomb blast, measured within the tolerance requirements given in 8. You may find similar items within these categories by selecting from the choices below:.
An illustration of sio calculation of tolerance from actual blasts is given in Clause B. Glazing dust, slivers and all iso 16933 smaller particles are not accounted as fragments. Learn more about the cookies we use and how to iso 16933 your settings.
The explosive composition, shape, mass, height and location shall be adjusted to iso 16933 these required parameters within iso 16933 tolerances allowed. A catalogue of Ethiopian Standards is also available freely and can be accessed in from our 19633. Note that this can differ from the instantaneous peak value recorded by the gauges, sometimes in 1633 form of a sharp spike of very short duration, which should be discarded.