Tribo Test

Quartiles

The set of journals have been ranked according to their SJR and divided into four equal groups, four quartiles. Q1 (green) comprises the quarter of the journals with the highest values, Q2 (yellow) the second highest values, Q3 (orange) the third highest values and Q4 (red) the lowest values.

Category	Year	Quartile
Mechanical Engineering	1999	Q3
Mechanical Engineering	2000	Q3
Mechanical Engineering	2001	Q3
Mechanical Engineering	2002	Q2
Mechanical Engineering	2003	Q3
Mechanical Engineering	2004	Q2
Mechanical Engineering	2005	Q2
Mechanical Engineering	2006	Q3
Mechanical Engineering	2007	Q3
Mechanical Engineering	2008	Q2
Mechanical Engineering	2009	Q2
Mechanical Engineering	2010	Q1
Mechanical Engineering	2011	Q1
Mechanics of Materials	1999	Q3
Mechanics of Materials	2000	Q3
Mechanics of Materials	2001	Q3
Mechanics of Materials	2002	Q3
Mechanics of Materials	2003	Q4
Mechanics of Materials	2004	Q3
Mechanics of Materials	2005	Q3
Mechanics of Materials	2006	Q4
Mechanics of Materials	2007	Q3
Mechanics of Materials	2008	Q3
Mechanics of Materials	2009	Q2
Mechanics of Materials	2010	Q2
Mechanics of Materials	2011	Q1
Surfaces and Interfaces	1999	Q4
Surfaces and Interfaces	2000	Q4
Surfaces and Interfaces	2001	Q4
Surfaces and Interfaces	2002	Q4
Surfaces and Interfaces	2003	Q4
Surfaces and Interfaces	2004	Q3
Surfaces and Interfaces	2005	Q3
Surfaces and Interfaces	2006	Q4
Surfaces and Interfaces	2007	Q3
Surfaces and Interfaces	2008	Q3
Surfaces and Interfaces	2009	Q2
Surfaces and Interfaces	2010	Q2
Surfaces and Interfaces	2011	Q1
Surfaces, Coatings and Films	1999	Q3
Surfaces, Coatings and Films	2000	Q3
Surfaces, Coatings and Films	2001	Q3
Surfaces, Coatings and Films	2002	Q3
Surfaces, Coatings and Films	2003	Q3
Surfaces, Coatings and Films	2004	Q3
Surfaces, Coatings and Films	2005	Q3
Surfaces, Coatings and Films	2006	Q3
Surfaces, Coatings and Films	2007	Q3
Surfaces, Coatings and Films	2008	Q3
Surfaces, Coatings and Films	2009	Q2
Surfaces, Coatings and Films	2010	Q2
Surfaces, Coatings and Films	2011	Q1

SJR

The SJR is a size-independent prestige indicator that ranks journals by their 'average prestige per article'. It is based on the idea that 'all citations are not created equal'. SJR is a measure of scientific influence of journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from It measures the scientific influence of the average article in a journal, it expresses how central to the global scientific discussion an average article of the journal is.

Year	SJR
1999	0.163
2000	0.177
2001	0.192
2002	0.199
2003	0.143
2004	0.303
2005	0.231
2006	0.134
2007	0.174
2008	0.249
2009	0.463
2010	0.604
2011	1.356

Total Documents

Evolution of the number of published documents. All types of documents are considered, including citable and non citable documents.

Year	Documents
1999	21
2000	25
2001	22
2002	24
2003	23
2004	21
2005	12
2006	26
2007	15
2008	16
2009	0
2010	0
2011	0

Citations per document

This indicator counts the number of citations received by documents from a journal and divides them by the total number of documents published in that journal. The chart shows the evolution of the average number of times documents published in a journal in the past two, three and four years have been cited in the current year. The two years line is equivalent to journal impact factor ™ (Thomson Reuters) metric.

Cites per document	Year	Value
Cites / Doc. (4 years)	1999	0.149
Cites / Doc. (4 years)	2000	0.189
Cites / Doc. (4 years)	2001	0.153
Cites / Doc. (4 years)	2002	0.177
Cites / Doc. (4 years)	2003	0.141
Cites / Doc. (4 years)	2004	0.213
Cites / Doc. (4 years)	2005	0.267
Cites / Doc. (4 years)	2006	0.238
Cites / Doc. (4 years)	2007	0.207
Cites / Doc. (4 years)	2008	0.378
Cites / Doc. (4 years)	2009	0.478
Cites / Doc. (4 years)	2010	0.579
Cites / Doc. (4 years)	2011	1.032
Cites / Doc. (3 years)	1999	0.149
Cites / Doc. (3 years)	2000	0.151
Cites / Doc. (3 years)	2001	0.189
Cites / Doc. (3 years)	2002	0.206
Cites / Doc. (3 years)	2003	0.113
Cites / Doc. (3 years)	2004	0.232
Cites / Doc. (3 years)	2005	0.191
Cites / Doc. (3 years)	2006	0.250
Cites / Doc. (3 years)	2007	0.203
Cites / Doc. (3 years)	2008	0.472
Cites / Doc. (3 years)	2009	0.544
Cites / Doc. (3 years)	2010	0.710
Cites / Doc. (3 years)	2011	1.500
Cites / Doc. (2 years)	1999	0.077
Cites / Doc. (2 years)	2000	0.163
Cites / Doc. (2 years)	2001	0.283
Cites / Doc. (2 years)	2002	0.170
Cites / Doc. (2 years)	2003	0.152
Cites / Doc. (2 years)	2004	0.170
Cites / Doc. (2 years)	2005	0.136
Cites / Doc. (2 years)	2006	0.303
Cites / Doc. (2 years)	2007	0.211
Cites / Doc. (2 years)	2008	0.415
Cites / Doc. (2 years)	2009	0.774
Cites / Doc. (2 years)	2010	1.063
Cites / Doc. (2 years)	2011	0.000

Total Cites

Self-Cites

Evolution of the total number of citations and journal's self-citations received by a journal's published documents during the three previous years.
Journal Self-citation is defined as the number of citation from a journal citing article to articles published by the same journal.

Cites	Year	Value
Self Cites	1999	0
Self Cites	2000	2
Self Cites	2001	1
Self Cites	2002	1
Self Cites	2003	0
Self Cites	2004	1
Self Cites	2005	0
Self Cites	2006	2
Self Cites	2007	4
Self Cites	2008	3
Self Cites	2009	0
Self Cites	2010	0
Self Cites	2011	0
Total Cites	1999	11
Total Cites	2000	11
Total Cites	2001	14
Total Cites	2002	14
Total Cites	2003	8
Total Cites	2004	16
Total Cites	2005	13
Total Cites	2006	14
Total Cites	2007	12
Total Cites	2008	25
Total Cites	2009	31
Total Cites	2010	22
Total Cites	2011	24

External Cites per Doc

Cites per Doc

Evolution of the number of total citation per document and external citation per document (i.e. journal self-citations removed) received by a journal's published documents during the three previous years. External citations are calculated by subtracting the number of self-citations from the total number of citations received by the journal’s documents.

Cites	Year	Value
External Cites per document	1999	0.149
External Cites per document	2000	0.123
External Cites per document	2001	0.176
External Cites per document	2002	0.191
External Cites per document	2003	0.113
External Cites per document	2004	0.217
External Cites per document	2005	0.191
External Cites per document	2006	0.214
External Cites per document	2007	0.136
External Cites per document	2008	0.415
External Cites per document	2009	0.544
External Cites per document	2010	0.710
External Cites per document	2011	1.500
Cites per document	1999	0.149
Cites per document	2000	0.151
Cites per document	2001	0.189
Cites per document	2002	0.206
Cites per document	2003	0.113
Cites per document	2004	0.232
Cites per document	2005	0.191
Cites per document	2006	0.250
Cites per document	2007	0.203
Cites per document	2008	0.472
Cites per document	2009	0.544
Cites per document	2010	0.710
Cites per document	2011	1.500

% International Collaboration

International Collaboration accounts for the articles that have been produced by researchers from several countries. The chart shows the ratio of a journal's documents signed by researchers from more than one country; that is including more than one country address.

Year	International Collaboration
1999	0.00
2000	4.00
2001	27.27
2002	0.00
2003	17.39
2004	19.05
2005	8.33
2006	19.23
2007	26.67
2008	25.00
2009	0
2010	0
2011	0

Citable documents

Non-citable documents

Not every article in a journal is considered primary research and therefore "citable", this chart shows the ratio of a journal's articles including substantial research (research articles, conference papers and reviews) in three year windows vs. those documents other than research articles, reviews and conference papers.

Documents	Year	Value
Non-citable documents	1999	0
Non-citable documents	2000	1
Non-citable documents	2001	5
Non-citable documents	2002	7
Non-citable documents	2003	7
Non-citable documents	2004	4
Non-citable documents	2005	2
Non-citable documents	2006	1
Non-citable documents	2007	1
Non-citable documents	2008	1
Non-citable documents	2009	2
Non-citable documents	2010	1
Non-citable documents	2011	1
Citable documents	1999	74
Citable documents	2000	72
Citable documents	2001	69
Citable documents	2002	61
Citable documents	2003	64
Citable documents	2004	65
Citable documents	2005	66
Citable documents	2006	55
Citable documents	2007	58
Citable documents	2008	52
Citable documents	2009	55
Citable documents	2010	30
Citable documents	2011	15

Cited documents

Uncited documents

Ratio of a journal's items, grouped in three years windows, that have been cited at least once vs. those not cited during the following year.

Documents	Year	Value
Uncited documents	1999	66
Uncited documents	2000	62
Uncited documents	2001	64
Uncited documents	2002	56
Uncited documents	2003	64
Uncited documents	2004	55
Uncited documents	2005	60
Uncited documents	2006	46
Uncited documents	2007	48
Uncited documents	2008	34
Uncited documents	2009	39
Uncited documents	2010	17
Uncited documents	2011	4
Cited documents	1999	8
Cited documents	2000	11
Cited documents	2001	10
Cited documents	2002	12
Cited documents	2003	7
Cited documents	2004	14
Cited documents	2005	8
Cited documents	2006	10
Cited documents	2007	11
Cited documents	2008	19
Cited documents	2009	18
Cited documents	2010	14
Cited documents	2011	12