13 research outputs found
contact.engineering -- Create, analyze and publish digital surface twins from topography measurements across many scales
The optimization of surface finish to improve performance occurs largely
through trial and error, despite significant advancements in the relevant
science. There are three central challenges that account for this disconnect:
(1) the challenge of integration of many different types of measurement for the
same surface to capture the multi-scale nature of roughness; (2) the technical
complexity of implementing spectral analysis methods, and of applying
mechanical or numerical models to describe surface performance; (3) a lack of
consistency between researchers and industries in how surfaces are measured,
quantified, and communicated. Here we present a freely-available internet-based
application which attempts to overcome all three challenges. First, the
application enables the user to upload many different topography measurements
taken from a single surface, including using different techniques, and then
integrates all of them together to create a digital surface twin. Second, the
application calculates many of the commonly used topography metrics, such as
root-mean-square parameters, power spectral density (PSD), and autocorrelation
function (ACF), as well as implementing analytical and numerical calculations,
such as boundary element modeling (BEM) for elastic and plastic deformation.
Third, the application serves as a repository for users to securely store
surfaces, and if they choose, to share these with collaborators or even publish
them (with a digital object identifier) for all to access. The primary goal of
this application is to enable researchers and manufacturers to quickly and
easily apply cutting-edge tools for the characterization and
properties-modeling of real-world surfaces. An additional goal is to advance
the use of open-science principles in surface engineering by providing a FAIR
database where researchers can choose to publish surface measurements for all
to use.Comment: 19 pages, 6 figure
On the Communication of Scientific Results: The Full-Metadata Format
In this paper, we introduce a scientific format for text-based data files,
which facilitates storing and communicating tabular data sets. The so-called
Full-Metadata Format builds on the widely used INI-standard and is based on
four principles: readable self-documentation, flexible structure, fail-safe
compatibility, and searchability. As a consequence, all metadata required to
interpret the tabular data are stored in the same file, allowing for the
automated generation of publication-ready tables and graphs and the semantic
searchability of data file collections. The Full-Metadata Format is introduced
on the basis of three comprehensive examples. The complete format and syntax is
given in the appendix
Dying in Germany - consquences of social and demographic changes for palliative care and the health care system
Ewers M, Schaeffer D. Dying in Germany - consquences of social and demographic changes for palliative care and the health care system. Journal of Public Health. 2007;15(6):457-465