Ignition method

Sediment sample Bomb method of extraction Method 1 Method II Extraction with Im HCI after ignition Method 1 Method II Extraction with 1 HCI before ignition, Method 1... 

The 95% confidence limits vary from 0.5 to 1.4% of the average for the perchloric acid method and from 1.0 to 2.1% for the ignition method. Thus, the reproducibility of the two methods is similar, but a little better for the perchloric acid method. 

Saunders and Williams [79] have discussed ignition methods for the determination of organic phosphorus in soils. Sodium carbonate fusion has also been used to solubilize phosphate in soil analyses. 

The first is called Tinsley s wet combustion (Tinsley, 1950), and uses a highly corrosive mixture of sodium dichromate, and concentrated perchloric and sulphuric acids. For undergraduate practical classes, the safer loss on ignition method might be considered more appropriate. 

Initiation of a military explosive (or propellant) to deflagration, explosion or detonation can be achieved either by ignition or by detonation. Ignition method is used for producing deflagration (See Vol 3, p D38-R)(Ref 48), such as in case of propellants and some low demolition explosives, while detonation method (See in this Vol,p D137ff) is used for... 

Urop-ignition Method. For detu of ignition point of combustible liquids and gases the... 

Substances Ignitor PbsOi Si (wt.X) (wt.%) (g) Ignition method Onset time of pressure (ms) 100-300psig 300-500psig ... 

Igniting method Nichrome wire heater, ignition from below. 

Sample Oxidizer-combustible mixtures, lg or 5g Ignitor Pb 3 0 4 (70wt%)-Si(30wt.%), lg or 2g Igniting method Nichrome wire heater, ignition from below. 

Table 3.29 The effect of ignition methods on deflagration of organic peroxides using modified time/pressure test...

Ignitor (g) v Pressure range (psig) Organic peroxides (active oxygen(wt.%)) Ignition method 100- 300 Onset 1 300- 500 time of (ms) 3 100- 300 pressure 300- 500... 

Table 3.31 Equipment of Time/Pressure Test (TPT) and ignition method...

Test methods Test equipment Ignition methods... 

Fig. 5.3 Schematic representation of common initiation and ignition methods of energetic materials. A) Fuse type. B) Electric match type. C) Hot-wire type. D) Percussion / Stab type. E) Exploding-bridgewire type.

We have previously demonstrated (].) our ability to make time-resolved mass spectrometer sampling measurements of a flame propagating through a combustion bomb. Our interest in making these kinds of measurements is to study the chemistry of ignition by various ignition methods and to determine the value of these different methods for combustion modification. This report presents our first results on the chemistry of spark ignition. 

In the past, it is believed that the detonation of an explosive only has overcompressed detonation, and normal detonation, or DTT detonation from self-sustaining spread combustion/buming to detonation. Although there are detonation phenomena, which are not normally explained, only CJ detonation and its features gained the attention. Other kind of detonation is seldom being referred. If proper ignition method is used, most detonation can be transited into under-compressed detonation. Under compressed detonation is corresponding to the over compressed detonation state . Earlier it was also named weak detonation [4, 5]. 

Descamps, J. M., Delfosse, L. and Lucquin, M. An application of the self-ignition method of polymers anti-smoke additive induced glowing effect in the combustion of poly(vinyl chloride). Fire and Materials, 4, No. 1, 37 (1980)... 

Binder content is determined using one of the following methods (a) binder extraction method, (b) ignition method or (c) nuclear method. 

The binder extraction method is the most common and widely used method for determining the binder content in the mixture. It uses hydrocarbon solvents capable of dissolving bitumen and a binder extraction apparatus. Because of the high purchase and disposal costs of solvents, the risk to the operator s personal health and safety and the environmentally unfriendly nature of the hydrocarbon solvents, this test method was started to be replaced with the ignition method. The binder extraction method by European standards is conducted in accordance with CEN EN 12697-1 (2012), whereas that by American standards is in accordance with ASTM D 2172 (2011) or AASHTO T 164 (2013) and AASHTO T 319 (2008). A detailed description of the binder extraction test method is given in Section 9.6.1. 

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