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Sprengungshypothesen zum 11. September 2001 (Quelltext anzeigen)
Version vom 11. März 2017, 17:33 Uhr
, 17:33, 11. Mär. 2017keine Bearbeitungszusammenfassung
Zu Punkt 2:
Zu Punkt 2:
Der oben erwähnte Appendix C erlangte seine Brisanz durch Fehlinterpretationen:
Der oben erwähnte Appendix C erlangte seine Brisanz durch Fehlinterpretationen des folgenden Absatzes:
:''The severe corrosion and subsequent erosion of Samples 1 and 2 are a very unusual event. No clear explanation for the source of the sulfur has been identified. The rate of corrosion is also unknown. It is possible that this is the result of long-term heating in the ground following the collapse of the buildings. It is also possible that the phenomenon started prior to collapse and accelerated the weakening of the steel structure. [My emphasis] A detailed study into the mechanisms of this phenomenon is needed to determine what risk, if any, is presented to existing steel structures exposed to severe and long-burning fires.''
Die Fehldeutung beruht auf Unverständnis:
:''Evidence of a severe high temperature corrosion attack on the steel, including oxidation and sulfidation with subsequent intergranular melting, was readily visible in the near-surface microstructure. A liquid eutectic mixture containing primarily iron, oxygen, and sulfur formed during this hot corrosion attack on the steel. This sulfur-rich liquid penetrated preferentially down grain boundaries of the steel, severely weakening the beam and making it susceptible to erosion. The eutectic temperature for this mixture strongly suggests that the temperatures in this region of the steel beam approached 1,000° C (1,800°F), which is substantially lower than would be expected for melting this steel.'' ''<ref>https://www.fema.gov/media-library-data/20130726-1512-20490-8452/403_apc.pdf</ref>
:''Evidence of a severe high temperature corrosion attack on the steel, including oxidation and sulfidation with subsequent intergranular melting, was readily visible in the near-surface microstructure. A liquid eutectic mixture containing primarily iron, oxygen, and sulfur formed during this hot corrosion attack on the steel. This sulfur-rich liquid penetrated preferentially down grain boundaries of the steel, severely weakening the beam and making it susceptible to erosion. The eutectic temperature for this mixture strongly suggests that the temperatures in this region of the steel beam approached 1,000° C (1,800°F), which is substantially lower than would be expected for melting this steel.'' ''<ref>https://www.fema.gov/media-library-data/20130726-1512-20490-8452/403_apc.pdf</ref>
:''Those were early observations. Since then, a metallurgical study was completed (see the ASCE/FEMA BPAT report) … having looked at the debris myself, I saw no sign of an explosion or explosions. The collapse of towers 1 and 2 occurred exactly as one would expect from a fire... I don't know what else to say.'' ''<ref>http://911-engineers.blogspot.com.es/2007/04/professor-jonathan-r-barnett.html</ref>
:''Those were early observations. Since then, a metallurgical study was completed (see the ASCE/FEMA BPAT report) … having looked at the debris myself, I saw no sign of an explosion or explosions. The collapse of towers 1 and 2 occurred exactly as one would expect from a fire... I don't know what else to say.'' ''<ref>http://911-engineers.blogspot.com.es/2007/04/professor-jonathan-r-barnett.html</ref>
Verschwörungstheoretiker können zudem eine ganz einfache Frage nicht beantworten:
Wären tatsächlich Tonnen von Stahl geschmolzen, so hätte man diesen im Verlaufe der Bergungsarbeiten in einer aus dem Fließvorgang heraus erstarrten Form vorfinden müssen. Gefunden wurde – nichts!
Wären tatsächlich Tonnen von Stahl geschmolzen, so hätte man diesen im Verlaufe der Bergungsarbeiten in einer aus dem Fließvorgang heraus erstarrten Form vorfinden müssen. Gefunden wurde – nichts!
Fazit: Es gibt keine Hinweise auf geschmolzenen Stahl.
'''Fazit: Es gibt keine Hinweise auf geschmolzenen Stahl.'''