Is there consensus on why inflation is not rising? I find it kind of odd that we are not experiencing any significant inflation recent years despit the low rates and quantitative easings.

Is there a consensus why this is the case among economists? If not, what are the mos popular explanations?

I am refering to countries in weastern EU and USA.
If your question is about Europe, yes there is. Inflation took time to rise because commercial banks have used injected liquidities to consolidate their balance sheet instead of stimulating demands by creating credits (that did not previously exist when they make loans). This is called the money multiplier. The multiplier was somehow blocked (to ~$1$) because of their precaution behavior.

On March 10, 2016, the ECB has even considered the possibility of giving 200€ per month and per person to stimulate inflation. And this with the main idea of circumventing the commercial-bank system. This unconventional monetary policy is called monetary helicopter.