This document gives guidelines for ultrasonic attenuation spectroscopy methods for determining the size distributions of one or more material phases dispersed in a liquid at high concentrations, where the ultrasonic attenuation spectrum is not a linear function of the particle volume fraction. In this regime, particle-particle interactions are not negligible.<\/p>\n
This document is applicable to colloids, dispersions, slurries, and emulsions. The typical particle size for such analysis ranges from 10 nm to 3 mm, although particles outside this range have also been successfully measured. Measurements can be made for concentrations of the dispersed phase ranging from about 5 % by volume to over 50 % by volume, depending on the density contrast between the continuous and the dispersed phases, the particle size, and the frequency range[<\/sup> 9<\/sup> ] [<\/sup> 10<\/sup> ]<\/sup>. These ultrasonic methods can be used to monitor dynamic changes in the size distribution, including agglomeration or flocculation.<\/p>\n Measurement and characterization of particles by acoustic methods – Guidelines for non-linear theory<\/b><\/p>\nPDF Catalog<\/h4>\n
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\n PDF Pages<\/th>\n PDF Title<\/th>\n<\/tr>\n \n 2<\/td>\n undefined <\/td>\n<\/tr>\n \n 6<\/td>\n Foreword <\/td>\n<\/tr>\n \n 7<\/td>\n Introduction <\/td>\n<\/tr>\n \n 9<\/td>\n 1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms <\/td>\n<\/tr>\n\n 11<\/td>\n 5 Limits of applicability of linear theory
5.1 Multiple scattering
5.2 Concentration considerations <\/td>\n<\/tr>\n\n 14<\/td>\n 5.3 Steric repulsion <\/td>\n<\/tr>\n \n 15<\/td>\n 6 Measurement issues in concentrated systems
6.1 General
6.2 Path length limitation
6.3 High attenuation
6.4 Increased viscosity
6.5 Change in velocity <\/td>\n<\/tr>\n\n 16<\/td>\n 6.6 Change in pulse shape
6.7 Homogeneity
7 Nonlinear attenuation
8 Determination of particle size
8.1 Calculation <\/td>\n<\/tr>\n\n 17<\/td>\n 8.2 Limits of application
9 Instrument qualification
9.1 Calibration
9.2 Precision
9.2.1 Reference materials
9.2.2 Repeatability
9.2.3 Reproducibility
9.3 Accuracy
9.3.1 Qualification procedure <\/td>\n<\/tr>\n\n 18<\/td>\n 9.3.2 Reference materials
9.3.3 Instrument preparation
9.3.4 Accuracy test
9.3.5 Qualification acceptance criteria
10 Reporting of results <\/td>\n<\/tr>\n\n 19<\/td>\n Annex A (informative) Theories of attenuation in concentrated systems <\/td>\n<\/tr>\n \n 22<\/td>\n Annex B (informative) Practical example of PSD measurement (coupled phase model) <\/td>\n<\/tr>\n \n 30<\/td>\n Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" \n\n
\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n BSI<\/b><\/a><\/td>\n 2017<\/td>\n 36<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":302530,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-302522","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bsi","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/302522","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/302530"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=302522"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=302522"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=302522"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}