Measurement of cough droplet deposition using the cough machine

Masayuki Ogata, Maho Ichikawa, Hitomi Tsutsumi, Takao Ariga, Satoshi Hori, Shin Ichi Tanabe

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


We developed a cough machine that can generate human-like cough to evaluate the infection risk in indoor environments. The cough expired volume, propagation distance and velocity of cough, total mass of droplets and droplet size were compared with experimental results of subjects. Using the cough machine, the droplet deposition on horizontal surfaces and the position of facial mucous membranes were measured. It was shown that the number of droplet deposited on the facial mucous membranes decreased drastically over 90 cm. On horizontal surfaces, the droplet deposited most at 50-60 cm and over 90% of the droplet deposited within 90 cm.

Original languageEnglish
Pages (from-to)57-64
Number of pages8
JournalJournal of Environmental Engineering (Japan)
Issue number743
Publication statusPublished - 2018 Jan


  • Contact infection
  • Cough-machine
  • Droplet infection
  • Infection risk depostion

ASJC Scopus subject areas

  • Environmental Engineering


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